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. Information about eligibility for waivers of the contingent deferred sales charges (CDSCs) applicable to Class C shares is available from your financial professional and on page 15 of the prospectus under “CDSC waivers” or pages 105 to 107 of the fund’s Statement of Additional Information under “Waiver of Contingent Deferred Sales Charge.” Intermediaries may have different policies and procedures regarding the availability of CDSC waivers (See Appendix 1 - Intermediary sales charge waivers, which includes information about specific sales charge waivers applicable to the intermediary identified therein).

Shareholder Fees Caption [Text]

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Shareholder fees (%) (fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual fund operating expenses (%) (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

July 31, 2024

Expense Example [Heading]

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Expense example

Expense Example Narrative [Text Block]

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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]

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Sold

Expense Example, No Redemption, By Year, Caption [Text]

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Not Sold

Strategy [Heading]

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Principal investment strategies

Strategy Narrative [Text Block]

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The fund operates as a “government money market fund” in accordance with Rule 2a-7 under the Investment Company Act of 1940, as amended, and is managed in the following manner:

•	under normal market conditions, the fund invests at least 99.5% of its total assets in cash, U.S. Government securities and/or repurchase agreements that are fully collateralized by U.S. Government securities or cash

•	U.S. Government securities include both securities issued or guaranteed by the U.S. Treasury and securities issued by entities that are chartered or sponsored by Congress but are not issued or guaranteed by the U.S. Treasury

•	the fund seeks to maintain a stable net asset value (“NAV”) of $1.00 per share and its portfolio is valued using the amortized cost method as permitted by Rule 2a-7

•	the fund invests only in U.S. dollar-denominated securities

•	the fund buys securities that have remaining maturities of 397 days or less (as calculated pursuant to Rule 2a-7)

•	the fund maintains a dollar-weighted average maturity of 60 days or less and a dollar-weighted average life to maturity of 120 days or less

•	the fund must meet certain other criteria, including those relating to maturity, liquidity and credit quality

•	as a government money market fund, the fund is not subject to liquidity fees or redemption gates, although the fund’s Board of Trustees may elect to impose such fees or gates in the future.

Risk [Heading]

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Principal risks

Risk Narrative [Text Block]

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You could lose money by investing in the fund. Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. 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. The fund’s sponsor has no legal obligation to provide financial support to the fund, and you should not expect that the sponsor will provide financial support to the fund at any time.

During periods of heightened market volatility or reduced liquidity, governments, their agencies, or other regulatory bodies, both within the United States and abroad, may take steps to intervene. These actions, which could include legislative, regulatory, or economic initiatives, might have unforeseeable consequences and could adversely affect the fund’s performance or otherwise constrain the fund’s ability to achieve its investment objective.

The fund’s main risks are listed below in alphabetical order, not in order of importance. Before investing, be sure to read the additional descriptions of these risks beginning on page 5 of the prospectus.

Changing distribution levels risk. The fund may cease or reduce the level of its distribution if income or dividends paid from its investments declines.

Credit and counterparty risk. The issuer or guarantor of a fixed-income security 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.

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.

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.

Interest rate risk. A sharp and unexpected rise in interest rates could impair the fund’s ability to maintain a stable net asset value. A low interest rate environment may prevent the fund from providing a positive yield to shareholders or paying fund expenses out of fund assets and could impair the fund’s ability to maintain a stable net asset value.

Liquidity risk. An impairment of the fund’s ability to sell portfolio securities at advantageous prices exposes the fund to liquidity risk. Liquidity risk may result from 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 marketability 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.

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.

Redemption risk. The fund may experience periods of heavy redemptions that could cause it to liquidate its assets at inopportune times or at a loss or depressed value, particularly during periods of declining or illiquid markets, and that could affect the fund’s ability to maintain a $1.00 share price. Redemption risk is greater to the extent that the fund has investors with large shareholdings, short investment horizons or unpredictable cash flow

needs. The redemption by one or more large shareholders of their holdings in the fund could cause the remaining shareholders in the fund to lose money. In addition, the fund may suspend redemptions and liquidate the fund when permitted by applicable regulations.

U.S. government agency obligations risk. The fund invests in obligations issued by agencies and instrumentalities of the U.S. government. Government-sponsored entities such as Federal National Mortgage Association (Fannie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac) and the Federal Home Loan Banks, although chartered or sponsored by Congress, are not funded by congressional appropriations and the debt securities that they issue are neither guaranteed nor issued by the U.S. government. Such debt securities are subject to the risk of default on the payment of interest and/or principal, similar to the debt securities of private issuers. The maximum potential liability of the issuers of some U.S. government obligations may greatly exceed their current resources, including any legal right to support from the U.S. government. Although the U.S. government has provided financial support to Fannie Mae and Freddie Mac in the past, there can be no assurance that it will support these or other government-sponsored entities in the future.

U.S. Treasury obligations risk. The market value of direct obligations of the U.S. Treasury may vary due to changes in interest rates. In addition, changes to the financial condition or credit rating of the U.S. government may cause the value of the fund’s investments in obligations issued by the U.S. Treasury to decline.

Risk Lose Money [Text]

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You could lose money by investing in the fund. Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so.

Risk Not Insured Depository Institution [Text]

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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.

Bar Chart and Performance Table [Heading]

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Past performance

Performance Narrative [Text Block]

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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. Past performance 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, Monday to Thursday, 8:00 A.M.— 7:00 P.M., and Friday, 8:00 A.M.—6:00 P.M., Eastern time. Calendar year total returns are shown only for Class A shares and would be different for other share classes.

Performance Information Illustrates Variability of Returns [Text]

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Performance Availability Phone [Text]

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800-225-5291

Performance Availability Website Address [Text]

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jhinvestments.com

Performance Past Does Not Indicate Future [Text]

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Past performance does not indicate future results.

Bar Chart [Heading]

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Calendar year total returns—Class A (%)

Bar Chart Closing [Text Block]

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Year-to-date total return. The fund’s total return for the six months ended June 30, 2022, was 0.04%.
Best quarter: Q2 2019, 0.47%
Worst quarter: Q2 2014, 0.00%

Performance Table Heading

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Average annual total returns (%)—as of 12/31/21

Money Market Seven Day Yield, Caption [Text]

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Yield informationFor the fund’s 7-day effective yield, call 800-225-5291.

Money Market Seven Day Yield Phone

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800-225-5291

(John Hancock Money Market Fund - Classes A and C) | (John Hancock Money Market Fund) | Class A

Prospectus:

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Maximum Cumulative Sales Charge (as a percentage)

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none

Maximum Deferred Sales Charge (as a percentage)

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none

Shareholder Fee, Other

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$ 20

Management Fees (as a percentage of Assets)

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0.36%

Distribution and Service (12b-1) Fees

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0.25%

Other Expenses (as a percentage of Assets):

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0.17%

Total Annual Fund Operating Expenses

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0.78%

Fee Waiver or Reimbursement

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(0.26%)

^[1],[2]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_NetExpensesOverAssets

0.52%

Expense Example, with Redemption, 1 Year

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$ 53

Expense Example, with Redemption, 3 Years

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223

Expense Example, with Redemption, 5 Years

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408

Expense Example, with Redemption, 10 Years

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$ 942

Annual Return 2014

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0.01%

Annual Return 2015

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0.01%

Annual Return 2016

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0.01%

Annual Return 2017

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0.38%

Annual Return 2018

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1.31%

Annual Return 2019

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1.69%

Annual Return 2020

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0.23%

Annual Return 2021

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0.02%

Year to Date Return, Label

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Year-to-date total return. The fund’s total return for the six months ended June 30, 2022, was 0.04%.

Bar Chart, Year to Date Return

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0.04%

Bar Chart, Year to Date Return, Date

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Jun. 30, 2022

Highest Quarterly Return, Label

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Best quarter: Q2 2019, 0.47%

Highest Quarterly Return

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0.47%

Highest Quarterly Return, Date

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Jun. 30, 2019

Lowest Quarterly Return, Label

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Worst quarter: Q2 2014, 0.00%

Lowest Quarterly Return

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none

Lowest Quarterly Return, Date

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Jun. 30, 2014

1 Year

rr_AverageAnnualReturnYear01

0.02%

5 Years

rr_AverageAnnualReturnYear05

0.73%

10 Years

rr_AverageAnnualReturnYear10

0.37%

(John Hancock Money Market Fund - Classes A and C) | (John Hancock Money Market Fund) | Class C

Prospectus:

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Maximum Cumulative Sales Charge (as a percentage)

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none

Maximum Deferred Sales Charge (as a percentage)

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1.00%

Shareholder Fee, Other

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$ 20

Management Fees (as a percentage of Assets)

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0.36%

Distribution and Service (12b-1) Fees

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1.00%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.17%

Total Annual Fund Operating Expenses

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1.53%

Fee Waiver or Reimbursement

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(1.01%)

^[1],[2]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_NetExpensesOverAssets

0.52%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 153

Expense Example, with Redemption, 3 Years

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384

Expense Example, with Redemption, 5 Years

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738

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,533

Expense Example, No Redemption, 1 Year

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Expense Example, No Redemption, 3 Years

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384

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

738

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 1,533

1 Year

rr_AverageAnnualReturnYear01

(0.98%)

5 Years

rr_AverageAnnualReturnYear05

0.73%

10 Years

rr_AverageAnnualReturnYear10

0.37%

[1]

The distributor contractually agrees to limit its Rule 12b-1 fees for Class A and Class C shares to 0.00%. This agreement expires on July 31, 2023 unless renewed by mutual agreement of the fund and the distributor based upon a determination that this is appropriate under the circumstances at that time.

[2]

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. This waiver is allocated proportionally among the participating funds. 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, 2024, 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.