v3.25.2
John Hancock Multifactor Small Cap ETF Investment Risks - John Hancock Multifactor Small Cap ETF
Apr. 30, 2025
Active Trading Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Active trading market risk.  Active trading markets for fund shares may not be developed or maintained by market makers or authorized participants. Market makers are not obligated to make a market in the fund’s shares or to submit purchase or redemption orders for creation units. Decisions by market makers or authorized participants to reduce their role with respect to market making or creation/redemption activities in times of market stress could lead to wider bid-ask spreads and variances in the market of fund shares.
Authorized Participant Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Authorized participant concentration risk.  To the extent that authorized participants are unable or otherwise unavailable to proceed with creation and/or redemption orders and no other authorized participant is able to create or redeem in their place, shares may trade at a discount to net asset value (NAV) and may face delisting. To the extent that the fund’s limited number of intermediaries that act as authorized participants exit the business or are unable to proceed with creation and/or redemption orders and no other authorized participant is able to create or redeem in their place, there may be a significantly diminished trading market for fund shares.
Economic And Market Events Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] 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.
Equity Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Equity securities risk.  The price of equity securities may decline due to changes in a company’s financial condition or overall market conditions.
ETF Trading Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] ETF trading risk.  The market price of shares may include a bid-ask spread (the difference between the prices at which investors are willing to buy and sell shares), which may vary over time and may increase for various reasons, including decreased trading volume or reduced market liquidity.
Index Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Index risk.  Because the fund is not “actively” managed, its performance could be lower than funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline or a decline in the value of one or more issuers. Errors in the construction or calculation of the Index may occur from time to time. Any such errors may not be identified and corrected for some period of time, which may have an adverse impact on the fund and its shareholders.
Industry Or Sector Investing Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Industry or sector investing risk.  The performance of a fund that focuses on a single industry or sector of the economy depends in large part on the performance of that industry or sector. As a result, the value of an investment may fluctuate more widely since it is more susceptible to market, economic, political, regulatory, and other conditions and risks affecting that industry or sector than a fund that invests more broadly across industries and sectors.
Operational And Cybersecurity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] 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.
Premium Discount Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Premium/discount risk.  The NAV of the fund and the value of your investment may fluctuate. Disruptions to creations and redemptions or the market price of the fund’s holdings, the existence of extreme market volatility or potential lack of an active trading market for shares may result in shares trading at a significant premium or discount to NAV. If a shareholder purchases shares at a time when the market price is at a premium to the NAV or sells shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses. Given the nature of the relevant markets for certain of the fund’s securities, shares may trade at a larger premium or discount to the NAV than shares of other ETFs. In addition, in stressed market conditions, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the fund’s underlying portfolio holdings. While the creation/redemption feature is designed to make it more likely that the fund’s shares normally will trade on stock exchanges at prices close to the fund’s next calculated NAV, exchange prices are not expected to correlate exactly with the fund’s NAV due to timing reasons, supply and demand imbalances and other factors.
Quantitative Modeling Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] 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.
Small Company Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Small company risk.  Small companies are generally less established and may be more volatile than larger companies. Small-capitalization securities may underperform the market as a whole.
Tracking Error Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Tracking error risk.  The fund’s portfolio composition and performance may vary substantially from that of the Index due to factors such as the fees and expenses of the fund, transaction costs, differences in accrual of dividends, delays in the fund’s implementation of changes to the Index, pricing differences in the treatment of corporate actions, or the need to meet new or existing regulatory requirements. Tracking error risk may be heightened in volatile markets or under other unusual market conditions.
Trading Issues Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Trading issues risk.  Trading in shares on NYSE Arca, Inc. (NYSE Arca) may be halted in certain circumstances. There can be no assurance that the requirements of NYSE Arca necessary to maintain the listing of the fund will continue to be met.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] Many factors affect performance, and fund shares will fluctuate in price, meaning you could lose money.
Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] 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.