Performance Management - Class A C [Member] - John Hancock Money Market Fund |
Mar. 31, 2026 |
|---|---|
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Past performance</span> |
| Performance Narrative [Text Block] | 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 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, 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 Past Does Not Indicate Future [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">Past performance (before and after taxes) does not indicate future results.</span> |
| Performance Information Illustrates Variability of Returns [Text] | <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> |
| Bar Chart [Heading] | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;font-weight:bold;">Calendar year total returns (%)—Class A</span> |
| Bar Chart Closing [Text Block] | Year-to-date total return through:Q2 20261.61%Best quarter:Q4 20231.22%Worst quarter:Q1 20220.00% |
| Performance Table Heading | <span style="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Average annual total returns (%)—as of 12/31/2025</span> |
| Money Market Seven Day Yield, Caption [Optional Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Yield information</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">For the fund’s 7-day effective yield, call </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">800-225-5291</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">.</span> |
| Money Market Seven Day Yield Phone | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">800-225-5291</span> |
| Performance Availability Website Address [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">jhinvestments.com</span> |
| Performance Availability Phone [Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">800-225-5291, Monday to Thursday, </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">8:00</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;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;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;font-variant:small-caps;"> p.m.</span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">, Eastern time</span> |
| Class A | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | <span style="color:#000000;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 | 1.61% |
| Bar Chart, Year to Date Return, Date | Jun. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Best quarter:</span> |
| Highest Quarterly Return | 1.22% |
| Highest Quarterly Return, Date | Dec. 31, 2023 |
| Lowest Quarterly Return, Label [Optional Text] | <span style="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Worst quarter:</span> |
| Lowest Quarterly Return | none |
| Lowest Quarterly Return, Date | Mar. 31, 2022 |