v3.24.4
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Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName JOHN HANCOCK FUNDS II
Prospectus Date rr_ProspectusDate Jan. 01, 2025
Class NAV | International Small Company Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading <span style="color:#000000;font-family:Arial Narrow;font-size:24pt;">John Hancock International Small Company Fund</span>
Objective [Heading] rr_ObjectiveHeading <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Investment objective</span>
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock To seek long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Fees and expenses</span>
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption <span style="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Shareholder fees (%) </span><span style="color:#000000;font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;">(fees paid directly from your investment)</span>
Operating Expenses Caption [Text] rr_OperatingExpensesCaption <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Annual fund operating expenses (%) </span><span style="font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;">(expenses that you pay each year as a percentage of the value of your investment)</span>
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination <span style="font-family:Arial Narrow;font-size:8pt;">July 31, 2026</span>
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Portfolio turnover</span>
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During its most recent fiscal year, the fund’s portfolio turnover rate was 9% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 9.00%
Expense Example [Heading] rr_ExpenseExampleHeading <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Expense example</span>
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Please see below a hypothetical example showing the expenses of a $10,000 investment for the time periods indicated and then assuming you sell all of your shares at the end of those periods. The example assumes a 5% average annual return and that fund expenses will not change over the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Principal investment strategies</span>
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock Under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in securities of small-cap companies in the particular markets in which the fund invests. Based on market capitalization data as of October 31, 2024, the maximum market capitalization range of companies eligible for purchase by the fund was approximately $1.2 billion to $9.4 billion, depending on the country. The fund will primarily invest in a broad and diverse group of equity securities of foreign small companies in developed markets, but may also hold equity securities of companies located in emerging markets. The fund invests its assets in securities listed on bona fide securities exchanges or traded on the over-the-counter markets. These exchanges or over-the-counter markets may be either within or outside the issuer’s domicile country. The manager measures company size on a country- or region-specific basis and based primarily on market capitalization. In the countries or regions authorized for investment, the manager first ranks eligible companies based on market capitalizations and then determines the universe of eligible stocks by defining the maximum market capitalization of a small company that may be purchased by the fund with respect to each country or region. This threshold will vary based on market conditions. The fund intends to use a market-capitalization-weighted approach in seeking to set country weights based on the relative market capitalizations of eligible small companies within each country (see below). Weightings of certain countries may vary from their weightings in published international indices. The fund may also use derivatives such as futures contracts and options on futures contracts to adjust market exposure based on actual or expected cash inflows to or outflows from the fund. Futures contracts and options on futures contracts may be for foreign or U.S. equity securities and indices. The fund may also enter into forward currency contracts to facilitate settlement of equity purchases of foreign securities, repatriation of foreign currency balances, or currency exchange. In addition to cash, money market instruments, and other short-term investments, the fund may invest in affiliated and unaffiliated registered and unregistered money market funds to manage cash pending investment, to maintain liquidity to pay redemptions, to make other anticipated cash payments, or for other purposes. Investments in money market funds may involve a duplication of certain fees and expenses. The fund does not seek current income as an investment objective and investments will not be based on an issuer’s dividend payment policy or record, although many of the companies in which the fund invests do pay dividends. The manager will determine in its discretion when and whether to invest in countries that have been authorized by its Investment Committee, depending on a number of factors, including, but not limited to, asset growth in the fund, constraints imposed within markets authorized for investment, and other characteristics of each country’s markets. Other countries may be authorized for investment in the future. Although the manager does not intend to purchase securities not associated with markets authorized for investment, the fund may acquire such securities in connection with corporate actions or other reorganizations or transactions with respect to securities that are held by the fund from time to time. Also, the fund may continue to hold investments in countries that are not currently designated as markets authorized for investment, but had been authorized for investment in the past, and may reinvest distributions received in connection with such existing investments in such previously authorized markets.Market-capitalization-weighted approachThe fund uses market capitalization weighting to determine individual security weights and, where applicable, country or region weights. Market-capitalization weighting means each security is generally purchased based on the issuer’s relative market capitalization. Market-capitalization weighting may be modified by the manager for a variety of reasons. The manager may adjust the representation in the fund of an eligible company, or exclude a company, after considering such factors as free float, price momentum, short-run reversals, trading strategies, liquidity, size, relative price, profitability, investment characteristics, and other factors that the manager determines to be appropriate. The manager may deviate from market-capitalization weighting to limit or fix the exposure of the fund to a particular country or issuer to a maximum proportion of fund assets. The manager may exclude the stock of a company that meets applicable market capitalization criteria if the manager determines, in its judgment, that the purchase of such stock is inappropriate in light of other conditions. These adjustments will result in a deviation from traditional market-capitalization weighting. Country weights may be based on the total market capitalization of companies within each country and may take into consideration the free float of companies within a country or whether these companies are eligible to be purchased for the particular strategy. In addition, to maintain a satisfactory level of diversification, the Investment Committee may limit or fix the exposure to a particular country or region to a maximum proportion of the assets of that vehicle. Country weights may also vary due to general day-to-day trading patterns and price movements.
Risk [Heading] rr_RiskHeading <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Principal risks</span>
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Past performance</span>
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The following information illustrates the variability of the fund’s returns and provides some indication of the risks of investing in the fund by showing changes in the fund’s performance from year to year and by showing how the fund’s average annual returns compared with a broad-based securities market index. Past performance (before and after taxes) does not indicate future results. The MSCI World ex USA Small Cap Index shows how the fund’s performance compares against the returns of similar investments. All figures assume dividend reinvestment. Performance information is updated daily, monthly, and quarterly and may be obtained by calling 800-344-1029 between 8:00 a.m. and 7:00 p.m., Eastern time, on most business days.Please note that after-tax returns reflect the highest individual federal marginal income-tax rate in effect as of the date provided and do not reflect any state or local taxes. Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other tax-advantaged investment plan.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns <span style="font-family:Arial Narrow;font-size:9pt;">The following information illustrates the variability of the fund’s returns and provides some indication of the risks of investing in the fund by showing changes in the fund’s performance from year to year and by showing how the fund’s average annual returns compared with a broad-based securities market index. </span>
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone <span style="font-family:Arial Narrow;font-size:9pt;">800-344-1029 between 8:00 </span><span style="font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">a.m.</span><span style="font-family:Arial Narrow;font-size:9pt;"> and 7:00</span><span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">p.m.</span><span style="font-family:Arial Narrow;font-size:9pt;">, Eastern time, on most business days.</span>
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture <span style="font-family:Arial Narrow;font-size:9pt;">Past performance (before and after taxes) does not indicate future results. </span>
Bar Chart [Heading] rr_BarChartHeading <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;">Calendar year total returns (%)—Class NAV</span>
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Year-to-date total return through:Q3 202411.61%Best quarter:Q2 202021.32%Worst quarter:Q1 2020-30.21%
Performance Table Heading rr_PerformanceTableHeading <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Average annual total returns (%)—as of 12/31/2023</span>
Performance Table Market Index Changed rr_PerformanceTableMarketIndexChanged <span style="font-family:Arial Narrow;font-size:8pt;">The fund has designated the MSCI World ex-USA Index as its new broad-based securities market index in accordance with the revised definition for such an index.</span>
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">Please note that after-tax returns reflect the highest individual federal marginal income-tax rate in effect as of the date provided and do not reflect any state or local taxes.</span>
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"> Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">tax-advantaged investment plan.</span>
Class NAV | International Small Company Fund | Risk Lose Money [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Many factors affect performance, and fund shares will fluctuate in price, meaning you could lose money.
Class NAV | International Small Company Fund | Risk Not Insured Depository Institution [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Class NAV | International Small Company Fund | Cash And Cash Equivalents Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Cash and cash equivalents risk.  Under certain market conditions, such as during a rising stock market, rising interest rate or rising credit spread markets, the use of cash and/or cash equivalents, including money market instruments, could have a negative effect on the fund’s ability to achieve its investment objective and may negatively impact the fund’s performance.
Class NAV | International Small Company Fund | Changing Distribution Levels Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Changing distribution levels risk.  The fund may cease or reduce the level of its distribution if income or dividends paid from its investments declines.
Class NAV | International Small Company Fund | Credit And Counterparty Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Credit and counterparty risk.  The counterparty to an over-the-counter derivatives contract or a borrower of fund securities may not make timely payments or otherwise honor its obligations.
Class NAV | International Small Company Fund | Economic And Market Events Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Economic and market events risk.  Events in the U.S. and global financial markets, including actions taken by the U.S. Federal Reserve or foreign central banks to stimulate or stabilize economic growth, may at times result in unusually high market volatility, which could negatively impact performance. Reduced liquidity in credit and fixed-income markets could adversely affect issuers worldwide. Banks and financial services companies could suffer losses if interest rates rise or economic conditions deteriorate.
Class NAV | International Small Company Fund | Equity Securities Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Equity securities risk.  The price of equity securities may decline due to changes in a company’s financial condition or overall market conditions.
Class NAV | International Small Company Fund | Foreign Securities Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Foreign securities risk.  Less information may be publicly available regarding foreign issuers, including foreign government issuers. Foreign securities may be subject to foreign taxes and may be more volatile than U.S. securities. Currency fluctuations and political and economic developments may adversely impact the value of foreign securities. The risks of investing in foreign securities are magnified in emerging markets. Depositary receipts are subject to most of the risks associated with investing in foreign securities directly because the value of a depositary receipt is dependent upon the market price of the underlying foreign equity security. Depositary receipts are also subject to liquidity risk.
Class NAV | International Small Company Fund | Hedging Derivatives And Other Strategic Transactions Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Hedging, derivatives, and other strategic transactions risk.  Hedging, derivatives, and other strategic transactions may increase a fund’s volatility and could produce disproportionate losses, potentially more than the fund’s principal investment. Risks of these transactions are different from and possibly greater than risks of investing directly in securities and other traditional instruments. Under certain market conditions, derivatives could become harder to value or sell and may become subject to liquidity risk (i.e., the inability to enter into closing transactions). Derivatives and other strategic transactions that the fund intends to utilize include: foreign currency forward contracts, futures contracts, options on futures contracts, and options. Foreign currency forward contracts, futures contracts, and options generally are subject to counterparty risk. Derivatives associated with foreign currency transactions are subject to currency risk.
Class NAV | International Small Company Fund | Industrials sector risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Industrials sector risk.  Companies in the industrials sector may be affected by general economic conditions, commodity production and pricing, supply and demand fluctuations, environmental and other government regulations, geopolitical events, interest rates, insurance costs, technological developments, liabilities arising from governmental or civil actions, labor relations, input controls, and government spending.
Class NAV | International Small Company Fund | Investment company securities risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Investment company securities risk.  Fund shareholders indirectly bear their proportionate share of the expenses of any investment company in which the fund invests. The total return on such investments will be reduced by the operating expenses and fees of such other investment companies, including advisory fees.
Class NAV | International Small Company Fund | Liquidity Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Liquidity risk.  The extent (if at all) to which a security may be sold or a derivative position closed without negatively impacting its market value may be impaired by reduced market activity or participation, legal restrictions, or other economic and market impediments.
Class NAV | International Small Company Fund | Operational And Cybersecurity Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Operational and cybersecurity risk.  Cybersecurity breaches may allow an unauthorized party to gain access to fund assets, customer data, or proprietary information, or cause a fund or its service providers to suffer data corruption or lose operational functionality. Similar incidents affecting issuers of a fund’s securities may negatively impact performance. Operational risk may arise from human error, error by third parties, communication errors, or technology failures, among other causes.
Class NAV | International Small Company Fund | Quantitative Modeling Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Quantitative modeling risk.  Quantitative models may not accurately predict future market movements or characteristics, which may negatively impact performance. Models also may perform differently than expected due to implementation problems, technological malfunction, or programming or data inaccuracies, among other possible issues.
Class NAV | International Small Company Fund | Sector Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Sector risk.  When a fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the fund were invested more evenly across sectors.
Class NAV | International Small Company Fund | Small And Mid Sized Company Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Small and mid-sized company risk.  Small and mid-sized companies are generally less established and may be more volatile than larger companies. Small and/or mid-capitalization securities may underperform the market as a whole.
Class NAV | International Small Company Fund | Class NAV  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum front-end sales charge (load) rr_MaximumCumulativeSalesChargeOverOther none
Maximum deferred sales charge (load) rr_MaximumDeferredSalesChargeOverOther none
Management fee rr_ManagementFeesOverAssets 0.80%
Other expenses rr_OtherExpensesOverAssets 0.12%
Total annual fund operating expenses rr_ExpensesOverAssets 0.92%
Contractual expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [1]
Total annual fund operating expenses after expense reimbursements rr_NetExpensesOverAssets 0.91%
1 year rr_ExpenseExampleYear01 $ 93
3 years rr_ExpenseExampleYear03 292
5 years rr_ExpenseExampleYear05 508
10 years rr_ExpenseExampleYear10 $ 1,130
2014 rr_AnnualReturn2014 (6.52%)
2015 rr_AnnualReturn2015 5.25%
2016 rr_AnnualReturn2016 5.17%
2017 rr_AnnualReturn2017 30.33%
2018 rr_AnnualReturn2018 (20.20%)
2019 rr_AnnualReturn2019 23.39%
2020 rr_AnnualReturn2020 9.03%
2021 rr_AnnualReturn2021 13.96%
2022 rr_AnnualReturn2022 (17.89%)
2023 rr_AnnualReturn2023 13.69%
Year to Date Return, Label rr_YearToDateReturnLabel <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Year-to-date total return through:</span>
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2024
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 11.61%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Best quarter:</span>
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 21.32%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Worst quarter:</span>
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (30.21%)
1 year rr_AverageAnnualReturnYear01 13.69%
5 year rr_AverageAnnualReturnYear05 7.44%
10 year rr_AverageAnnualReturnYear10 4.41%
Class NAV | International Small Company Fund | Return After Taxes on Distributions | Class NAV  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 12.39%
5 year rr_AverageAnnualReturnYear05 5.69%
10 year rr_AverageAnnualReturnYear10 2.96%
Class NAV | International Small Company Fund | Return After Taxes on Distributions and Sale of Shares | Class NAV  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 8.09%
5 year rr_AverageAnnualReturnYear05 5.30%
10 year rr_AverageAnnualReturnYear10 2.95%
Class NAV | International Small Company Fund | MSCI World ex-USA Index (reflects no deduction for fees, expenses, or taxes, except foreign withholding taxes on dividends)  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 17.94% [2]
5 year rr_AverageAnnualReturnYear05 8.45% [2]
10 year rr_AverageAnnualReturnYear10 4.32% [2]
Class NAV | International Small Company Fund | MSCI World ex USA Small Cap Index (reflects no deduction for fees, expenses, or taxes, except foreign withholding taxes on dividends)  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 12.62%
5 year rr_AverageAnnualReturnYear05 7.05%
10 year rr_AverageAnnualReturnYear10 4.63%
[1] The advisor contractually agrees to waive a portion of its management fee and/or reimburse expenses for the fund and certain other John Hancock funds according to an asset level breakpoint schedule that is based on the aggregate net assets of all the funds participating in the waiver or reimbursement, including the fund (the participating portfolios). This waiver equals, on an annualized basis, 0.0100% of that portion of the aggregate net assets of all the participating portfolios that exceeds $75 billion but is less than or equal to $125 billion; 0.0125% of that portion of the aggregate net assets of all the participating portfolios that exceeds $125 billion but is less than or equal to $150 billion; 0.0150% of that portion of the aggregate net assets of all the participating portfolios that exceeds $150 billion but is less than or equal to $175 billion; 0.0175% of that portion of the aggregate net assets of all the participating portfolios that exceeds $175 billion but is less than or equal to $200 billion; 0.0200% of that portion of the aggregate net assets of all the participating portfolios that exceeds $200 billion but is less than or equal to $225 billion; and 0.0225% of that portion of the aggregate net assets of all the participating portfolios that exceeds $225 billion. The amount of the reimbursement is calculated daily and allocated among all the participating portfolios in proportion to the daily net assets of each participating portfolio. During its most recent fiscal year, the fund’s reimbursement amounted to 0.01% of the fund’s average daily net assets. This agreement expires on July 31, 2026, unless renewed by mutual agreement of the fund and the advisor based upon a determination that this is appropriate under the circumstances at that time.
[2] The fund has designated the MSCI World ex-USA Index as its new broad-based securities market index in accordance with the revised definition for such an index.