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Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName JOHN HANCOCK INVESTMENT TRUST
Prospectus Date rr_ProspectusDate Mar. 01, 2025
Class A C I R6 | John Hancock Diversified Macro Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading <span style="color:#000000;font-family:Arial Narrow;font-size:24pt;">John Hancock Diversified Macro 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. You may qualify for sales charge discounts on Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in the John Hancock family of funds.Intermediaries may have different policies and procedures regarding the availability of front-end sales charge waivers or contingent deferred sales charge (CDSC) waivers (See Appendix 1 - Intermediary sales charge waivers, which includes information about specific sales charge waivers applicable to the intermediaries identified therein). More information about these and other discounts is available from your financial professional and beginning on page 23 of the prospectus under “Sales charge reductions and waivers” or page 122 of the fund’s Statement of Additional Information under “Sales Charges on Class A and Class C Shares.”
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 </span><span style="font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;">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 0% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">You may qualify for sales </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">charge discounts on Class A shares if you and your family invest, or agree to invest in the future, at least $</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">50,000</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"> in the John Hancock family of funds.</span>
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent <span style="font-family:Arial Narrow;font-size:8pt;">“Other expenses” have been restated from fiscal year amounts to reflect current fees and expenses.</span>
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, except as shown below, 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:
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;">Shares Sold</span>
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;">Shares</span><span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;">Not Sold</span>
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 The fund pursues its investment objective by utilizing a multi-asset, quantitatively-driven investment strategy that seeks to provide exposure to diversified sources of return. The fund’s investment strategy is a directional, long and short strategy that utilizes fundamental and price-based indicators to establish return forecasts across a broad range of asset classes globally. The investment strategy incorporates a variety of models that generate macro fundamental forecasts, assess yield and earnings differentials, compare current valuations relative to historic fair value, and analyze directional price trends across markets. The manager will allocate the fund’s assets across a range of asset classes comprising equities, fixed income, foreign currencies, and commodities. Exposure to these asset classes will be implemented by investing in derivative instruments, including futures (including equity index futures, interest rate futures, bond futures and commodity futures) and foreign currency forward contracts. Quantitative risk management and portfolio construction techniques will be employed to control exposure across individual markets and sectors in an effort to enhance returns as well as to maintain the fund’s diversification and volatility objectives. The fund is actively managed and the fund’s asset class exposures will vary over time based on the manager’s proprietary investment models and, in part, on maintaining portfolio diversification. The fund expects to maintain exposure to all models at all times. The fund, on average, will target an annualized volatility of approximately 8%. Volatility is a statistical measurement of the dispersion of returns of a security or fund or index. The fund’s actual or realized volatility level for longer or shorter periods of time may be materially higher or lower depending on market conditions. The fund is generally intended to have a low correlation to the equity and bond markets. The fund is not designed to match the performance of any hedge fund index or benchmark and may be characterized as “macro” or “multi-asset” in nature. The fund’s use of derivatives will have the economic effect of financial leverage. Financial leverage magnifies exposure to the swings in prices of an asset class underlying an instrument and results in increased volatility, which means the fund will have the potential for greater gains as well as the potential for greater losses than if the fund does not use instruments that have a leveraging effect. Due to the fund’s use of derivative instruments such as futures, foreign currency futures and forward contracts, a significant portion of the fund’s assets will be invested directly or indirectly in money market instruments, which may include U.S. Government securities, U.S. Government agency securities, overnight and/or fixed-term repurchase agreements, money market mutual fund shares and cash and cash equivalents for use as margin or collateral for these derivative instruments. Such investments may generate income for the fund. Investment in the Subsidiary. The fund may gain exposure to the commodities markets by investing up to 25% of its total assets in a wholly-owned subsidiary of the fund organized as a company under the laws of the Cayman Islands: John Hancock Diversified Macro Offshore Subsidiary Fund, Ltd. (the Subsidiary). The Subsidiary is advised by the subadvisor, under the supervision of the advisor, and seeks to gain commodities exposure. The Subsidiary primarily obtains its commodity exposure by investing in commodity-linked derivative instruments, which may include but are not limited to total return swaps, commodity (U.S. or foreign) futures and commodity-linked notes. Neither the fund nor the Subsidiary intends to invest directly in physical commodities. The Subsidiary may also invest in other instruments, including fixed-income securities, either as investments or to serve as margin or collateral for its swap positions, and foreign currency transactions (including forward contracts).
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 ICE BofA 0-3 Month U.S. Treasury Bill 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 at our website, jhinvestments.com, or by calling 800-225-5291 (Class A and Class C), Monday to Thursday, 8:00 a.m.—7:00 p.m., and Friday, 8:00 a.m.—6:00 p.m., Eastern time, or 888-972-8696 (Class I and Class R6) between 8:30 a.m. and 5:00 p.m., Eastern time, on most business days.Please note that after-tax returns (shown for Class A shares only) 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. After-tax returns for other share classes would vary.
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;">800-225-5291 (Class A and Class C), Monday to </span><span style="font-family:Arial Narrow;font-size:9pt;">Thursday, 8:00</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;">a.m.</span><span style="font-family:Arial Narrow;font-size:9pt;">—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;">, and Friday, 8:00</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;">a.m.</span><span style="font-family:Arial Narrow;font-size:9pt;">—6:00</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, or 888-972-8696 (Class I and Class R6) between 8:30</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;">a.m.</span><span style="font-family:Arial Narrow;font-size:9pt;"> and 5:00</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 Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress <span style="font-family:Arial Narrow;font-size:9pt;">jhinvestments.com</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 A </span><span style="font-family:Arial Narrow;font-size:9pt;">(</span><span style="font-family:Arial Narrow;font-size:9pt;">sales charges are not reflected in the bar chart and returns would have been lower if they were</span><span style="font-family:Arial Narrow;font-size:9pt;">)</span>
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads <span style="font-family:Arial Narrow;font-size:9pt;">sales charges are not reflected in the bar chart and returns would have been lower if they were</span>
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock Best quarter:Q1 202414.16%Worst quarter:Q1 2020-9.00%
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 12/31/2024</span>
Performance Table Market Index Changed rr_PerformanceTableMarketIndexChanged <span style="font-family:Arial Narrow;font-size:8pt;">The fund has designated the Bloomberg U.S. Aggregate Bond 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 (shown for Class A shares only)</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"> reflect the highest individual federal marginal income-tax rate in effect as of the date </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">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 </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">IRA, 401(k), or other tax-advantaged investment plan.</span>
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">Please note that after-tax returns (shown for Class A shares only)</span>
Class A C I R6 | John Hancock Diversified Macro 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 A C I R6 | John Hancock Diversified Macro 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 A C I R6 | John Hancock Diversified Macro Fund | Asset Allocation Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Asset allocation risk.  Although allocation among asset categories generally limits exposure to any one category, the management team may favor a category that performs poorly relative to the others.
Class A C I R6 | John Hancock Diversified Macro 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 A C I R6 | John Hancock Diversified Macro Fund | Commodity Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Commodity risk.  Commodity prices may be volatile due to fluctuating demand, supply disruption, speculation, and other factors. Certain commodity investments may have no active trading market at times.
Class A C I R6 | John Hancock Diversified Macro Fund | Credit And Counterparty Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Credit and counterparty risk.  The issuer or guarantor of a fixed-income security, 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. U.S. government securities are subject to varying degrees of credit risk depending upon the nature of their support. A downgrade or default affecting any of the fund’s securities could affect the fund’s performance.
Class A C I R6 | John Hancock Diversified Macro 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 A C I R6 | John Hancock Diversified Macro 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. Securities the manager believes are undervalued may never realize their full potential value, and in certain markets value stocks may underperform the market as a whole.
Class A C I R6 | John Hancock Diversified Macro Fund | Fixed Income Securities Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Fixed-income securities risk.  A rise in interest rates typically causes bond prices to fall. The longer the average maturity or duration of the bonds held by a fund, the more sensitive it will likely be to interest-rate fluctuations. An issuer may not make all interest payments or repay all or any of the principal borrowed. Changes in a security’s credit quality may adversely affect fund performance.
Class A C I R6 | John Hancock Diversified Macro 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.
Class A C I R6 | John Hancock Diversified Macro 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, and total return swaps. Foreign currency forward contracts, futures contracts, and swaps generally are subject to counterparty risk. In addition, swaps may be subject to interest-rate and settlement risk, and the risk of default of the underlying reference obligation. Derivatives associated with foreign currency transactions are subject to currency risk.
Class A C I R6 | John Hancock Diversified Macro Fund | High Portfolio Turnover Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock High portfolio turnover risk.  Trading securities actively and frequently can increase transaction costs (thus lowering performance) and taxable distributions.
Class A C I R6 | John Hancock Diversified Macro Fund | Large Company Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Large company risk.  Larger companies may grow more slowly than smaller companies or be slower to respond to business developments. Large-capitalization securities may underperform the market as a whole.
Class A C I R6 | John Hancock Diversified Macro Fund | Leverage Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Leveraging risk.  Using derivatives may result in a leveraged portfolio. Leveraging tends to magnify, sometimes significantly, the effect of any increase or decrease in the fund’s exposure to an asset class and may cause the fund’s net asset value per share (NAV) to experience greater volatility. Leveraging long exposures increases a fund’s losses when the value of its investments declines. Some derivatives have the potential for unlimited loss, regardless of the size of the initial investment.
Class A C I R6 | John Hancock Diversified Macro 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. Liquidity risk may be magnified in rising interest rate environments due to higher than normal redemption rates. Widespread selling of fixed-income securities to satisfy redemptions during periods of reduced demand may adversely impact the price or salability of such securities. Periods of heavy redemption could cause the fund to sell assets at a loss or depressed value, which could negatively affect performance. Redemption risk is heightened during periods of declining or illiquid markets.
Class A C I R6 | John Hancock Diversified Macro 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 A C I R6 | John Hancock Diversified Macro 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 A C I R6 | John Hancock Diversified Macro Fund | Repurchase Agreement Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Repurchase agreements risk.  The risk of a repurchase agreement transaction is limited to the ability of the seller to pay the agreed-upon sum on the delivery date. In the event of bankruptcy or other default by the seller, the instrument purchased may decline in value, interest payable on the instrument may be lost and there may be possible difficulties and delays in obtaining collateral and delays and expense in liquidating the instrument.
Class A C I R6 | John Hancock Diversified Macro Fund | Short Sales Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Short sales risk.  In a short sale, a fund pays interest on a borrowed security. The fund will lose money if the price of the borrowed security increases between the short sale and the replacement date.
Class A C I R6 | John Hancock Diversified Macro 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 A C I R6 | John Hancock Diversified Macro Fund | Subsidiary Investment Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Subsidiary investment risk.  By investing in the Subsidiary, the fund is indirectly exposed to the risks associated with the Subsidiary’s investments and operations. The Subsidiary is not subject to U.S. laws, including securities laws and their protections. Because the Subsidiary is not registered under U.S. law, it may not be able to negotiate terms with its counterparties equivalent to those negotiated by a registered fund. Changes in applicable law could result in the inability of the Subsidiary to operate as described, and could adversely affect the fund’s investment approach.
Class A C I R6 | John Hancock Diversified Macro Fund | Tax Risk [Member]  
Risk Return Abstract rr_RiskReturnAbstract  
Risk [Text Block] rr_RiskTextBlock Tax risk.  The tax treatment of commodity-related investments and income from the Subsidiary may be adversely affected by future U.S. tax legislation, regulation, or guidance.
Class A C I R6 | John Hancock Diversified Macro Fund | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum front-end sales charge (load) on purchases, as a % of purchase price rr_MaximumCumulativeSalesChargeOverOfferingPrice 5.00%
Maximum deferred sales charge (load) as a % of purchase or sale price, whichever is less rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Small account fee (for fund account balances under $1,000) ($) rr_MaximumAccountFee $ 20
Management fee rr_ManagementFeesOverAssets 1.18%
Distribution and service (Rule 12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.19%
Total annual fund operating expenses rr_ExpensesOverAssets 1.62%
Contractual expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [1]
Total annual fund operating expenses after expense reimbursements rr_NetExpensesOverAssets 1.61%
1 year rr_ExpenseExampleYear01 $ 656
3 years rr_ExpenseExampleYear03 985
5 years rr_ExpenseExampleYear05 1,336
10 years rr_ExpenseExampleYear10 $ 2,325
2020 rr_AnnualReturn2020 (2.52%)
2021 rr_AnnualReturn2021 (2.55%)
2022 rr_AnnualReturn2022 12.03%
2023 rr_AnnualReturn2023 2.51%
2024 rr_AnnualReturn2024 2.33%
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 Mar. 31, 2024
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 14.16%
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 (9.00%)
1 year rr_AverageAnnualReturnYear01 (2.74%)
5 year rr_AverageAnnualReturnYear05 1.19%
Since inception rr_AverageAnnualReturnSinceInception 1.35%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 29, 2019
Class A C I R6 | John Hancock Diversified Macro Fund | Class C  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum front-end sales charge (load) on purchases, as a % of purchase price rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum deferred sales charge (load) as a % of purchase or sale price, whichever is less rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Small account fee (for fund account balances under $1,000) ($) rr_MaximumAccountFee $ 20
Management fee rr_ManagementFeesOverAssets 1.18%
Distribution and service (Rule 12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.19% [2]
Total annual fund operating expenses rr_ExpensesOverAssets 2.37%
Contractual expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [1]
Total annual fund operating expenses after expense reimbursements rr_NetExpensesOverAssets 2.36%
1 year rr_ExpenseExampleYear01 $ 339
3 years rr_ExpenseExampleYear03 739
5 years rr_ExpenseExampleYear05 1,265
10 years rr_ExpenseExampleYear10 2,519
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 239
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 739
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,265
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,519
1 year rr_AverageAnnualReturnYear01 0.48%
5 year rr_AverageAnnualReturnYear05 1.44%
Since inception rr_AverageAnnualReturnSinceInception 1.54%
Class A C I R6 | John Hancock Diversified Macro Fund | Class I  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum front-end sales charge (load) on purchases, as a % of purchase price rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum deferred sales charge (load) as a % of purchase or sale price, whichever is less rr_MaximumDeferredSalesChargeOverOfferingPrice none
Small account fee (for fund account balances under $1,000) ($) rr_MaximumAccountFee none
Management fee rr_ManagementFeesOverAssets 1.18%
Distribution and service (Rule 12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.19%
Total annual fund operating expenses rr_ExpensesOverAssets 1.37%
Contractual expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [1]
Total annual fund operating expenses after expense reimbursements rr_NetExpensesOverAssets 1.36%
1 year rr_ExpenseExampleYear01 $ 138
3 years rr_ExpenseExampleYear03 433
5 years rr_ExpenseExampleYear05 749
10 years rr_ExpenseExampleYear10 $ 1,645
1 year rr_AverageAnnualReturnYear01 2.59%
5 year rr_AverageAnnualReturnYear05 2.51%
Since inception rr_AverageAnnualReturnSinceInception 2.60%
Class A C I R6 | John Hancock Diversified Macro Fund | Class R6  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum front-end sales charge (load) on purchases, as a % of purchase price rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum deferred sales charge (load) as a % of purchase or sale price, whichever is less rr_MaximumDeferredSalesChargeOverOfferingPrice none
Small account fee (for fund account balances under $1,000) ($) rr_MaximumAccountFee none
Management fee rr_ManagementFeesOverAssets 1.18%
Distribution and service (Rule 12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.07%
Total annual fund operating expenses rr_ExpensesOverAssets 1.25%
Contractual expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [1]
Total annual fund operating expenses after expense reimbursements rr_NetExpensesOverAssets 1.24%
1 year rr_ExpenseExampleYear01 $ 126
3 years rr_ExpenseExampleYear03 396
5 years rr_ExpenseExampleYear05 685
10 years rr_ExpenseExampleYear10 $ 1,510
1 year rr_AverageAnnualReturnYear01 2.70%
5 year rr_AverageAnnualReturnYear05 2.59%
Since inception rr_AverageAnnualReturnSinceInception 2.70%
Class A C I R6 | John Hancock Diversified Macro Fund | Return After Taxes on Distributions | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 (2.81%)
5 year rr_AverageAnnualReturnYear05 (0.32%)
Since inception rr_AverageAnnualReturnSinceInception (0.24%)
Class A C I R6 | John Hancock Diversified Macro Fund | Return After Taxes on Distributions and Sale of Shares | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 (1.62%)
5 year rr_AverageAnnualReturnYear05 0.27%
Since inception rr_AverageAnnualReturnSinceInception 0.39%
Class A C I R6 | John Hancock Diversified Macro Fund | Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 1.25% [3]
5 year rr_AverageAnnualReturnYear05 (0.33%) [3]
Since inception rr_AverageAnnualReturnSinceInception 0.15% [3]
Class A C I R6 | John Hancock Diversified Macro Fund | ICE BofA 0-3 Month U.S. Treasury Bill Index (reflects no deduction for fees, expenses, or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 year rr_AverageAnnualReturnYear01 5.30%
5 year rr_AverageAnnualReturnYear05 2.48%
Since inception rr_AverageAnnualReturnSinceInception 2.44%
[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] “Other expenses” have been restated from fiscal year amounts to reflect current fees and expenses.
[3] The fund has designated the Bloomberg U.S. Aggregate Bond Index as its new broad-based securities market index in accordance with the revised definition for such an index.