| Label | Element | Value | ||||
|---|---|---|---|---|---|---|
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Registrant Name | dei_EntityRegistrantName | JOHN HANCOCK INVESTMENT TRUST | ||||
| Prospectus Date | rr_ProspectusDate | Jan. 01, 2025 | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk/Return [Heading] | rr_RiskReturnHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:24pt;">John Hancock Disciplined Value Global Long/Short 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 growth of capital. | ||||
| 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 76 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="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Annual fund operating expenses (%) </span><span style="color:#000000;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="color:#000000;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="color:#000000;font-family:Arial Narrow;font-size:8pt;">February 28, 2026</span><span style="color:#000000;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. The fund is the successor to Boston Partners Global Long/Short Fund, a series of The RBB Fund, Inc. (the predecessor fund). During the predecessor fund’s most recent fiscal year, its portfolio turnover rate was 198% of the average value of its portfolio. | ||||
| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 198.00% | ||||
| 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 | ||||
| Other Expenses, New Fund, Based on Estimates [Text] | rr_OtherExpensesNewFundBasedOnEstimates | <span style="color:#000000;font-family:Arial Narrow;font-size:8pt;">“Other expenses” have been estimated for the fund’s first year of operations.</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="color:#000000;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="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;">Shares</span><span style="color:#000000;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 | Under normal circumstances, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in a portfolio of equity and equity-related securities that meet the fund’s value criteria, including without limitation exchange-traded and over-the-counter common and preferred stocks, warrants, options, rights, convertible securities, sponsored and unsponsored depositary receipts and shares, trust certificates, limited partnership interests, shares of other investment companies (including exchange-traded funds (ETFs)), and real estate investment trusts (REITs). A convertible security is a bond, debenture, note, preferred stock or other security that may be converted into or exchanged for a prescribed amount of common stock of the same or a different issuer within a particular period of time at a specified price or formula. The fund invests, both long and short, in securities issued anywhere in the world, including U.S. companies of any capitalization size. The fund defines non-U.S. companies as companies (i) that are organized under the laws of a foreign country; (ii) whose principal trading market is in a foreign country; or (iii) that have a majority of their assets, or that derive a significant portion of their revenue or profits from businesses, investments or sales, outside of the United States. The fund principally will be invested in issuers located in countries with developed securities markets, but may also invest in issuers located in emerging markets. The manager considers an emerging market country to include any country that is: 1) generally recognized to be an emerging market country by the international financial community, including the World Bank; 2) classified by the United Nations as a developing country; or 3) included in the MSCI Emerging Markets Index. Due to the unique relationship between China and its separately administered regions, the manager includes Hong Kong and Macau as emerging markets. The fund will allocate its assets among various regions and countries, including the United States (but in no less than three different countries). For long positions, the fund generally invests in the equity securities of issuers the manager believes are undervalued. For short positions, the fund generally takes positions in securities the manager has identified as overvalued. The manager applies a bottom-up stock selection process using a combination of fundamental and quantitative analysis of issuer-specific factors such as price-to-book value, price-to-sales and earnings ratios, dividend yields, strength of management, and cash flow. The fund may invest in securities of companies operating for three years or less (“unseasoned issuers”). The manager will determine the size of each long or short position by analyzing the tradeoff between the attractiveness of each position and its impact on the risk of the overall portfolio. The manager examines various factors in determining the value characteristics of such issuers including price-to-book value ratios and price-to-earnings ratios. These value characteristics are examined in the context of the issuer’s operating and financial fundamentals, including return on equity, earnings growth and cash flow. The manager selects securities for the fund based on an ongoing study of trends in industries and companies, earnings power and growth and other investment criteria. The fund may take both physical and synthetic long and short positions in a variety of equity and derivative instruments. The fund may hold significant synthetic short exposures. The fund’s long and short exposures will primarily be maintained on individual securities. With a physical short position, the fund sells a security that it does not own that must be returned later to meet its settlement obligations. Derivative instruments in which the fund may take long and short positions include futures and forwards, such as equity index futures and foreign currency forward contracts; swaps, such as total return swaps; and call and put options. Derivatives may be used to reduce risk, obtain efficient market exposure, and/or enhance investment returns. Derivative instruments may magnify the fund’s gains and losses. The fund’s portfolio is rebalanced regularly. The manager assesses each investment’s changing characteristics relative to its contribution to portfolio risk. The manager will sell an investment or close out a position that it believes no longer offers an appropriate return-to-risk trade-off. Under normal circumstances, the manager expects to maintain long and short positions so that the fund’s portfolio is approximately between 30% and 70% net long. The manager will sell an investment or close out a position when it no longer meets one or more investment criteria, either through obtaining target value or due to an adverse change in fundamentals or business momentum. Each holding has a target valuation established at purchase, which the manager constantly monitors and adjusts as appropriate. To meet margin requirements, redemptions or pending investments, the fund may also temporarily hold a portion of its assets in full faith and credit obligations of the United States government and in short-term notes, commercial paper or other money market instruments. The fund may invest from time to time a significant portion of its assets in smaller issuers (generally defined as issuers with a market capitalization equal to or less than $10 billion) which are more volatile and less liquid than investments in issuers with larger market capitalizations. The fund may invest up to 15% of its net assets in illiquid investments, including investments that are illiquid by virtue of the absence of a readily available market or legal or contractual restrictions on resale. In general, the fund’s investments are broadly diversified over a number of industries and, as a matter of policy, the fund is limited to investing a maximum of 25% of its total assets in any one industry. | ||||
| 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. 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.A note on performanceOn October 21, 2024, the fund acquired the assets and liabilities of the Boston Partners Global Long/Short Fund, a series of The RBB Fund, Inc. (the predecessor fund), and as a result of the transaction, adopted the accounting and performance history of the predecessor fund. The predecessor fund was advised by Boston Partners Global Investors, Inc., and Boston Partners Global Investors, Inc. is the subadvisor to this fund. Investor Class shares and Institutional Class shares of the predecessor fund commenced operations on April 11, 2014, and December 31, 2013, respectively. In connection with the Reorganization, Class I shares were issued in exchange for the predecessor fund's Institutional Class shares and Class A shares were issued in exchange for the predecessor fund's Investor Class shares. For periods prior to October 21, 2024, performance shown for Class I shares is that of Institutional Class shares of the predecessor fund over the last year, five (5) years and ten (10) years. Performance shown for Class A, Class C, and Class R6 shares is that of Investor Class shares of the predecessor fund over the last year, five (5) years and since inception. Returns for Class A, Class C, and Class R6 would differ from Investor Class shares only to the extent that expenses of the classes are different. Returns for Class I shares would differ from Institutional Class shares only to the extent that expenses of the classes are different. To the extent expenses of a class would have been higher than expenses of Investor or Institutional Class shares, as applicable, for the periods shown, performance would have been lower.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="color:#000000;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="color:#000000;font-family:Arial Narrow;font-size:9pt;">800-225-5291 (Class A and </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">Class C), Monday to Thursday, 8:00</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">a.m.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">—7:00</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">p.m.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">, and Friday, 8:00</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">a.m.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">—6:00</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">p.m.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">, Eastern time, or 888-972-8696 (Class I and Class R6) between 8:30</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">a.m.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"> and 5:00</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">p.m.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">, Eastern time, on most business days.</span> | ||||
| Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">jhinvestments.com</span> | ||||
| Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | <span style="color:#000000;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="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;">Calendar year total returns (%)—Class A </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">(</span><span style="color:#000000;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="color:#000000;font-family:Arial Narrow;font-size:9pt;">)</span> | ||||
| Bar Chart Does Not Reflect Sales Loads [Text] | rr_BarChartDoesNotReflectSalesLoads | <span style="color:#000000;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 | Year-to-date total return through:Q3 202411.24%Best quarter:Q4 202013.50%Worst quarter:Q1 2020-17.66% | ||||
| 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 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 Disciplined Value Global Long Short 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 Disciplined Value Global Long Short 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 Disciplined Value Global Long Short Fund | Convertible Securities Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Convertible securities risk. Convertible securities are subject to certain risks of both equity and debt securities. The market values of convertible securities tend to fall as interest rates rise and rise as interest rates fall. As the market price of underlying common stock declines below the conversion price, the market value of the convertible security tends to be increasingly influenced by its yield. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 Disciplined Value Global Long Short Fund | Currency Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Currency risk. Fluctuations in exchange rates may adversely affect the U.S. dollar value of a fund’s investments. Foreign currencies may decline in value, which could negatively impact performance. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 Disciplined Value Global Long Short 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 A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Exchange Traded Funds Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Exchange-traded funds (ETFs) risk. The risks of owning shares of an ETF include the risks of owning the underlying securities the ETF holds. Lack of liquidity in an ETF could result in the ETF being more volatile than its underlying securities. An ETF’s shares could trade at a significant premium or discount to its net asset value (NAV). A fund bears ETF fees and expenses indirectly. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Hong Kong Stock Connect Program (Stock Connect) Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Hong Kong Stock Connect Program (Stock Connect) risk. Trading in China A-Shares through Stock Connect, a mutual market access program that enables foreign investment in the People’s Republic of China (PRC), is subject to certain restrictions and risks. Securities listed on Stock Connect may lose purchase eligibility, which could adversely affect the fund’s performance. Trading through Stock Connect is subject to trading, clearance, and settlement procedures that may continue to develop as the program matures. Any changes in laws, regulations and policies applicable to Stock Connect may affect China A-Share prices. These risks are heightened by the underdeveloped state of the PRC’s investment and banking systems in general. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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, swaps, and total return swaps. Foreign currency forward contracts, futures contracts, options, 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 Disciplined Value Global Long Short 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 Disciplined Value Global Long Short Fund | Illiquid And Restricted Securities Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Illiquid and restricted securities risk. Illiquid and restricted securities may be difficult to value and may involve greater risks than liquid securities. Illiquidity may have an adverse impact on a particular security’s market price and the fund’s ability to sell the security. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Leveraging risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Leveraging risk. Using derivatives may result in a leveraged portfolio. 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 Disciplined Value Global Long Short 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 A C I R6 | John Hancock Disciplined Value Global Long Short 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 Disciplined Value Global Long Short Fund | Preferred Stock Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Preferred stock risk. Preferred stock generally ranks senior to common stock with respect to dividends and liquidation but ranks junior to debt securities. Unlike interest payments on debt securities, preferred stock dividends are payable only if declared by the issuer’s board of directors. Preferred stock may be subject to optional or mandatory redemption provisions. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Real Estate Investment Trust Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Real estate investment trust (REIT) risk. REITs, pooled investment vehicles that typically invest in real estate directly or in loans collateralized by real estate, carry risks associated with owning real estate, including the potential for a decline in value due to economic or market conditions. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 Disciplined Value Global Long Short 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 Disciplined Value Global Long Short Fund | Synthetic Short Exposure Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Synthetic short exposure risk. The fund will gain synthetic short exposure through a forward commitment through a swap agreement. Synthetic short exposures involve the risk that losses may be exaggerated, potentially losing more money than the actual cost of the investment. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Unseasoned issuers risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Unseasoned issuers risk. Unseasoned issuers may not have an established financial history and may have limited product lines, markets or financial resources. Unseasoned issuers may depend on a few key personnel for management and may be susceptible to losses and risks of bankruptcy. As a result, such securities may be more volatile and difficult to sell. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Value Investment Style Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Value investment style risk. Value securities may underperform the market as a whole, which may cause value-oriented funds to underperform equity funds with other investment strategies. Securities the manager believes are undervalued may never perform as expected. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Warrants Risk [Member] | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| Risk [Text Block] | rr_RiskTextBlock | Warrants risk. The prices of warrants may not precisely reflect the prices of their underlying securities. Warrant holders do not receive dividends or have voting or credit rights. A warrant ceases to have value if not exercised prior to its expiration date. | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 | 1.40% | ||||
| Distribution and service (Rule 12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | 0.25% | ||||
| Other expenses | rr_OtherExpensesOverAssets | 0.31% | [1] | |||
| Total annual fund operating expenses | rr_ExpensesOverAssets | 1.96% | ||||
| Contractual expense reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (0.06%) | [2] | |||
| Total annual fund operating expenses after expense reimbursements | rr_NetExpensesOverAssets | 1.90% | ||||
| 1 year | rr_ExpenseExampleYear01 | $ 683 | ||||
| 3 years | rr_ExpenseExampleYear03 | $ 1,079 | ||||
| 2015 | rr_AnnualReturn2015 | 6.26% | ||||
| 2016 | rr_AnnualReturn2016 | 2.09% | ||||
| 2017 | rr_AnnualReturn2017 | 7.23% | ||||
| 2018 | rr_AnnualReturn2018 | (9.38%) | ||||
| 2019 | rr_AnnualReturn2019 | 4.27% | ||||
| 2020 | rr_AnnualReturn2020 | (0.74%) | ||||
| 2021 | rr_AnnualReturn2021 | 17.42% | ||||
| 2022 | rr_AnnualReturn2022 | 15.77% | ||||
| 2023 | rr_AnnualReturn2023 | 8.11% | ||||
| 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 | 11.24% | ||||
| 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 | Dec. 31, 2020 | ||||
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 13.50% | ||||
| 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 | (17.66%) | ||||
| 1 year | rr_AverageAnnualReturnYear01 | 2.69% | ||||
| 5 year | rr_AverageAnnualReturnYear05 | 7.64% | ||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 4.71% | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 | 1.40% | ||||
| Distribution and service (Rule 12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | 1.00% | ||||
| Other expenses | rr_OtherExpensesOverAssets | 0.31% | [1] | |||
| Total annual fund operating expenses | rr_ExpensesOverAssets | 2.71% | ||||
| Contractual expense reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (0.06%) | [2] | |||
| Total annual fund operating expenses after expense reimbursements | rr_NetExpensesOverAssets | 2.65% | ||||
| 1 year | rr_ExpenseExampleYear01 | $ 368 | ||||
| 3 years | rr_ExpenseExampleYear03 | 836 | ||||
| Expense Example, No Redemption, 1 Year | rr_ExpenseExampleNoRedemptionYear01 | 268 | ||||
| Expense Example, No Redemption, 3 Years | rr_ExpenseExampleNoRedemptionYear03 | $ 836 | ||||
| 1 year | rr_AverageAnnualReturnYear01 | 7.11% | ||||
| 5 year | rr_AverageAnnualReturnYear05 | 8.75% | ||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 5.27% | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 | 1.40% | ||||
| Distribution and service (Rule 12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
| Other expenses | rr_OtherExpensesOverAssets | 0.31% | [1] | |||
| Total annual fund operating expenses | rr_ExpensesOverAssets | 1.71% | ||||
| Contractual expense reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (0.06%) | [2] | |||
| Total annual fund operating expenses after expense reimbursements | rr_NetExpensesOverAssets | 1.65% | ||||
| 1 year | rr_ExpenseExampleYear01 | $ 168 | ||||
| 3 years | rr_ExpenseExampleYear03 | $ 533 | ||||
| 1 year | rr_AverageAnnualReturnYear01 | 8.35% | ||||
| 5 year | rr_AverageAnnualReturnYear05 | 9.03% | ||||
| 10 year | rr_AverageAnnualReturnYear10 | 5.22% | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short 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 | 1.40% | ||||
| Distribution and service (Rule 12b-1) fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||
| Other expenses | rr_OtherExpensesOverAssets | 0.20% | [1] | |||
| Total annual fund operating expenses | rr_ExpensesOverAssets | 1.60% | ||||
| Contractual expense reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (0.06%) | [2] | |||
| Total annual fund operating expenses after expense reimbursements | rr_NetExpensesOverAssets | 1.54% | ||||
| 1 year | rr_ExpenseExampleYear01 | $ 157 | ||||
| 3 years | rr_ExpenseExampleYear03 | $ 499 | ||||
| 1 year | rr_AverageAnnualReturnYear01 | 8.11% | ||||
| 5 year | rr_AverageAnnualReturnYear05 | 8.75% | ||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 5.27% | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Return After Taxes on Distributions | Class A | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| 1 year | rr_AverageAnnualReturnYear01 | 2.37% | ||||
| 5 year | rr_AverageAnnualReturnYear05 | 7.41% | ||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 4.54% | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | Return After Taxes on Distributions and Sale of Shares | Class A | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| 1 year | rr_AverageAnnualReturnYear01 | 1.82% | ||||
| 5 year | rr_AverageAnnualReturnYear05 | 5.99% | ||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 3.60% | ||||
| Class A C I R6 | John Hancock Disciplined Value Global Long Short Fund | MSCI World Index (reflects no deduction for fees, expenses, or taxes, except foreign withholding taxes on dividends) | ||||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||||
| 1 year | rr_AverageAnnualReturnYear01 | 23.79% | ||||
| 5 year | rr_AverageAnnualReturnYear05 | 12.80% | ||||
| 10 year | rr_AverageAnnualReturnYear10 | 8.60% | ||||
| Since Inception | rr_AverageAnnualReturnSinceInception | 8.95% | ||||
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