This annual shareholder report contains important information about the John Hancock Income Fund (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291.

Material Fund Change Notice [Text Block]

This report describes changes to the fund that occurred during the reporting period.

Additional Information Phone Number

800-225-5291

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund (Class)	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Income Fund (Class A/JHFIX)	$84	0.83%

Expenses Paid, Amount

$ 84

Expense Ratio, Percent

0.83%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Income Fund (Class A/JHFIX) returned 3.56% (excluding sales charges) for the year ended May 31, 2024. The most significant factors affecting Fund performance during the period included rising bond yields, stronger-than-expected economic growth, and lowered expectations for interest rate cuts by the U.S. Federal Reserve. Sector performance in the bond market was also a key factor, with high-yield and investment-grade corporate bonds posting the best returns, while U.S. Treasury securities lagged.

TOP PERFORMANCE CONTRIBUTORS

Corporate bonds | High-yield and investment-grade corporate bonds represented nearly a third of the portfolio on average during the period and were the top contributors to the fund’s return.

Emerging markets debt | A small position in credit-related emerging markets bonds, denominated in U.S. dollars, was beneficial as emerging markets bonds were strong performers.

Global bond exposure | Bond holdings in Europe, Australia, and New Zealand also added value.

TOP PERFORMANCE DETRACTORS

Duration (interest rate sensitivity) | Rising bond yields around the globe put downward pressure on bond prices in general, which detracted from fund performance.

Foreign currency exposure | A stronger U.S. dollar during the period weighed on the fund’s exposure to foreign currencies, particularly the Japanese yen and Indonesian rupiah.

The views expressed in this report are exclusively those of the portfolio management team at Manulife Investment Management (US) LLC, and are subject to change. They are not meant as investment advice.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	5 Years	10 Years
Income Fund (Class A/JHFIX)	(0.58)%	0.56)%	1.21%
Income Fund (Class A/JHFIX)—excluding sales charge	3.56)%	1.38)%	1.62%
Bloomberg U.S. Aggregate Bond Index	1.31)%	(0.17)%	1.26%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Updated Performance Information Location [Text Block]

Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291.

Net Assets

$ 1,728,798,995

Holdings Count | Holding

567

Advisory Fees Paid, Amount

$ 6,005,642

Investment Company Portfolio Turnover

34.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,728,798,995%
Total number of portfolio holdings	$567%
Total advisory fees paid (net)	$6,005,642%
Portfolio turnover rate	$34%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Corporate bonds	39.7%
Foreign government obligations	25.3%
U.S. Government	12.7%
U.S. Government Agency	5.4%
Collateralized mortgage obligations – Commercial and residential	4.2%
Convertible bonds	2.4%
Term loans	2.1%
Collateralized mortgage obligations – U.S. Government Agency	2.0%
Municipal bonds	1.8%
Asset backed securities	1.4%
Preferred securities	0.8%
Short-term investments and other	2.2%

Quality Composition

Graphical Representation - Allocation 1 Chart

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 5-31-24 and do not reflect subsequent downgrades or upgrades, if any.

Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

Material Fund Change [Text Block]

Material Fund Changes

At a meeting held on December 12–14, 2023, the fund’s Board of Trustees approved a sales charge reduction and change to the contingent deferred sales charge (CDSC) for Class A shares. As a result, effective March 1, 2024, the maximum CDSC as a percentage of purchase or sale price, whichever is less, was reduced from 1.00% on certain purchases of $1 million or more, to 0.75% on certain purchases of $500,000 or more.

For more complete information, please refer to the fund’s prospectus. The currently effective prospectus is available at jhinvestments.com/documents or by calling 800-225-5291.

Material Fund Change Expenses [Text Block]

Summary of Change Legend [Text Block]

For more complete information, please refer to the fund’s prospectus. The currently effective prospectus is available at jhinvestments.com/documents or by calling 800-225-5291.

Updated Prospectus Phone Number

800-225-5291

Updated Prospectus Web Address

jhinvestments.com/documents

C000078712 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Income Fund

Class Name

Class R4

Trading Symbol

JSNFX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Income Fund (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291.

Additional Information Phone Number

800-225-5291

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund (Class)	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Income Fund (Class R4/JSNFX)	$68	0.67%

Expenses Paid, Amount

$ 68

Expense Ratio, Percent

0.67%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Income Fund (Class R4/JSNFX) returned 3.90% for the year ended May 31, 2024. The most significant factors affecting Fund performance during the period included rising bond yields, stronger-than-expected economic growth, and lowered expectations for interest rate cuts by the U.S. Federal Reserve. Sector performance in the bond market was also a key factor, with high-yield and investment-grade corporate bonds posting the best returns, while U.S. Treasury securities lagged.

TOP PERFORMANCE CONTRIBUTORS

Corporate bonds | High-yield and investment-grade corporate bonds represented nearly a third of the portfolio on average during the period and were the top contributors to the fund’s return.

Emerging markets debt | A small position in credit-related emerging markets bonds, denominated in U.S. dollars, was beneficial as emerging markets bonds were strong performers.

Global bond exposure | Bond holdings in Europe, Australia, and New Zealand also added value.

TOP PERFORMANCE DETRACTORS

Duration (interest rate sensitivity) | Rising bond yields around the globe put downward pressure on bond prices in general, which detracted from fund performance.

Foreign currency exposure | A stronger U.S. dollar during the period weighed on the fund’s exposure to foreign currencies, particularly the Japanese yen and Indonesian rupiah.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	5 Years	10 Years
Income Fund (Class R4/JSNFX)	3.90%	1.54)%	1.78%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.17)%	1.26%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Updated Performance Information Location [Text Block]

Net Assets

$ 1,728,798,995

Holdings Count | Holding

567

Advisory Fees Paid, Amount

$ 6,005,642

Investment Company Portfolio Turnover

34.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,728,798,995%
Total number of portfolio holdings	$567%
Total advisory fees paid (net)	$6,005,642%
Portfolio turnover rate	$34%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Corporate bonds	39.7%
Foreign government obligations	25.3%
U.S. Government	12.7%
U.S. Government Agency	5.4%
Collateralized mortgage obligations – Commercial and residential	4.2%
Convertible bonds	2.4%
Term loans	2.1%
Collateralized mortgage obligations – U.S. Government Agency	2.0%
Municipal bonds	1.8%
Asset backed securities	1.4%
Preferred securities	0.8%
Short-term investments and other	2.2%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000113489 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Income Fund

Class Name

Class R2

Trading Symbol

JSNSX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Income Fund (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291.

Additional Information Phone Number

800-225-5291

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund (Class)	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Income Fund (Class R2/JSNSX)	$93	0.91%

Expenses Paid, Amount

$ 93

Expense Ratio, Percent

0.91%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Income Fund (Class R2/JSNSX) returned 3.65% for the year ended May 31, 2024. The most significant factors affecting Fund performance during the period included rising bond yields, stronger-than-expected economic growth, and lowered expectations for interest rate cuts by the U.S. Federal Reserve. Sector performance in the bond market was also a key factor, with high-yield and investment-grade corporate bonds posting the best returns, while U.S. Treasury securities lagged.

TOP PERFORMANCE CONTRIBUTORS

Corporate bonds | High-yield and investment-grade corporate bonds represented nearly a third of the portfolio on average during the period and were the top contributors to the fund’s return.

Emerging markets debt | A small position in credit-related emerging markets bonds, denominated in U.S. dollars, was beneficial as emerging markets bonds were strong performers.

Global bond exposure | Bond holdings in Europe, Australia, and New Zealand also added value.

TOP PERFORMANCE DETRACTORS

Duration (interest rate sensitivity) | Rising bond yields around the globe put downward pressure on bond prices in general, which detracted from fund performance.

Foreign currency exposure | A stronger U.S. dollar during the period weighed on the fund’s exposure to foreign currencies, particularly the Japanese yen and Indonesian rupiah.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	5 Years	10 Years
Income Fund (Class R2/JSNSX)	3.65%	1.32)%	1.54%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.17)%	1.26%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Updated Performance Information Location [Text Block]

Net Assets

$ 1,728,798,995

Holdings Count | Holding

567

Advisory Fees Paid, Amount

$ 6,005,642

Investment Company Portfolio Turnover

34.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,728,798,995%
Total number of portfolio holdings	$567%
Total advisory fees paid (net)	$6,005,642%
Portfolio turnover rate	$34%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Corporate bonds	39.7%
Foreign government obligations	25.3%
U.S. Government	12.7%
U.S. Government Agency	5.4%
Collateralized mortgage obligations – Commercial and residential	4.2%
Convertible bonds	2.4%
Term loans	2.1%
Collateralized mortgage obligations – U.S. Government Agency	2.0%
Municipal bonds	1.8%
Asset backed securities	1.4%
Preferred securities	0.8%
Short-term investments and other	2.2%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000078713 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Income Fund

Class Name

Class R5

Trading Symbol

JSNVX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Income Fund (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291.

Additional Information Phone Number

800-225-5291

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund (Class)	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Income Fund (Class R5/JSNVX)	$48	0.47%

Expenses Paid, Amount

$ 48

Expense Ratio, Percent

0.47%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Income Fund (Class R5/JSNVX) returned 4.11% for the year ended May 31, 2024. The most significant factors affecting Fund performance during the period included rising bond yields, stronger-than-expected economic growth, and lowered expectations for interest rate cuts by the U.S. Federal Reserve. Sector performance in the bond market was also a key factor, with high-yield and investment-grade corporate bonds posting the best returns, while U.S. Treasury securities lagged.

TOP PERFORMANCE CONTRIBUTORS

Corporate bonds | High-yield and investment-grade corporate bonds represented nearly a third of the portfolio on average during the period and were the top contributors to the fund’s return.

Emerging markets debt | A small position in credit-related emerging markets bonds, denominated in U.S. dollars, was beneficial as emerging markets bonds were strong performers.

Global bond exposure | Bond holdings in Europe, Australia, and New Zealand also added value.

TOP PERFORMANCE DETRACTORS

Duration (interest rate sensitivity) | Rising bond yields around the globe put downward pressure on bond prices in general, which detracted from fund performance.

Foreign currency exposure | A stronger U.S. dollar during the period weighed on the fund’s exposure to foreign currencies, particularly the Japanese yen and Indonesian rupiah.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	5 Years	10 Years
Income Fund (Class R5/JSNVX)	4.11%	1.78)%	2.00%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.17)%	1.26%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Updated Performance Information Location [Text Block]

Net Assets

$ 1,728,798,995

Holdings Count | Holding

567

Advisory Fees Paid, Amount

$ 6,005,642

Investment Company Portfolio Turnover

34.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,728,798,995%
Total number of portfolio holdings	$567%
Total advisory fees paid (net)	$6,005,642%
Portfolio turnover rate	$34%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Corporate bonds	39.7%
Foreign government obligations	25.3%
U.S. Government	12.7%
U.S. Government Agency	5.4%
Collateralized mortgage obligations – Commercial and residential	4.2%
Convertible bonds	2.4%
Term loans	2.1%
Collateralized mortgage obligations – U.S. Government Agency	2.0%
Municipal bonds	1.8%
Asset backed securities	1.4%
Preferred securities	0.8%
Short-term investments and other	2.2%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000106430 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Income Fund

Class Name

Class R6

Trading Symbol

JSNWX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Income Fund (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291.

Additional Information Phone Number

800-225-5291

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund (Class)	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Income Fund (Class R6/JSNWX)	$43	0.42%

Expenses Paid, Amount

$ 43

Expense Ratio, Percent

0.42%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Income Fund (Class R6/JSNWX) returned 4.16% for the year ended May 31, 2024. The most significant factors affecting Fund performance during the period included rising bond yields, stronger-than-expected economic growth, and lowered expectations for interest rate cuts by the U.S. Federal Reserve. Sector performance in the bond market was also a key factor, with high-yield and investment-grade corporate bonds posting the best returns, while U.S. Treasury securities lagged.

TOP PERFORMANCE CONTRIBUTORS

Corporate bonds | High-yield and investment-grade corporate bonds represented nearly a third of the portfolio on average during the period and were the top contributors to the fund’s return.

Emerging markets debt | A small position in credit-related emerging markets bonds, denominated in U.S. dollars, was beneficial as emerging markets bonds were strong performers.

Global bond exposure | Bond holdings in Europe, Australia, and New Zealand also added value.

TOP PERFORMANCE DETRACTORS

Duration (interest rate sensitivity) | Rising bond yields around the globe put downward pressure on bond prices in general, which detracted from fund performance.

Foreign currency exposure | A stronger U.S. dollar during the period weighed on the fund’s exposure to foreign currencies, particularly the Japanese yen and Indonesian rupiah.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.

GROWTH OF $1,000,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	5 Years	10 Years
Income Fund (Class R6/JSNWX)	4.16%	1.83)%	2.05%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.17)%	1.26%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Updated Performance Information Location [Text Block]

Net Assets

$ 1,728,798,995

Holdings Count | Holding

567

Advisory Fees Paid, Amount

$ 6,005,642

Investment Company Portfolio Turnover

34.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,728,798,995%
Total number of portfolio holdings	$567%
Total advisory fees paid (net)	$6,005,642%
Portfolio turnover rate	$34%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Corporate bonds	39.7%
Foreign government obligations	25.3%
U.S. Government	12.7%
U.S. Government Agency	5.4%
Collateralized mortgage obligations – Commercial and residential	4.2%
Convertible bonds	2.4%
Term loans	2.1%
Collateralized mortgage obligations – U.S. Government Agency	2.0%
Municipal bonds	1.8%
Asset backed securities	1.4%
Preferred securities	0.8%
Short-term investments and other	2.2%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000212730 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Managed Account Shares Investment-Grade Corporate Bond Portfolio

Class Name

Investment-Grade Corporate Bond Portfolio

Trading Symbol

JMABX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Managed Account Shares Investment-Grade Corporate Bond Portfolio (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-247-0278.

Additional Information Phone Number

800-247-0278

Additional Information Email

jhinvestments.com/underlying-funds

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund			Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investment-Grade Corporate Bond Portfolio/JMABX			$0	0.00%

Expenses Paid, Amount

$ 0

Expense Ratio, Percent

0.00%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Managed Account Shares Investment-Grade Corporate Bond Portfolio (Investment-Grade Corporate Bond Portfolio/JMABX) returned 7.14% for the year ended May 31, 2024. The bond market posted a gain in the annual period. Bond prices experienced volatility due to the combination of persistent inflation and uncertainty as to when the U.S. Federal Reserve would begin to cut interest rates, but total returns were positive thanks to a sizable contribution from income. Corporate bonds performed particularly well on the strength of better-than expected economic growth, steady earnings, and robust investor risk appetites.

TOP PERFORMANCE CONTRIBUTORS

Holdings in the independent energy sector | Rising oil prices boosted profits and led to improving balance sheets for energy producers, fueling robust total returns for bonds issued by companies in the sector. The food & beverage, life insurance, and retail sectors were also top performers in the period.

A significant position in BBB issuers | Lower-rated investment-grade bonds helped performance, so a meaningful weighting in this area added value.

TOP PERFORMANCE DETRACTORS

A very narrow group of individual securities | The vast majority of the fund’s holdings produced positive absolute returns, but a handful of securities—including the bonds of Braskem SA—finished with losses.

Choice Hotels International, Inc. | This position also lost ground in the period, as did NMI Holdings.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	Since inception
Managed Account Shares Investment-Grade Corporate Bond Portfolio (Investment-Grade Corporate Bond Portfolio/JMABX)	7.14%	1.56)%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.42)%
Bloomberg U.S. Corporate Bond Index	4.40%	0.49)%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

Performance Inception Date

Jul. 09, 2019

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Net Assets

$ 237,384,124

Holdings Count | Holding

270

Advisory Fees Paid, Amount

$ 0

Investment Company Portfolio Turnover

41.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$237,384,124%
Total number of portfolio holdings	$270%
Total advisory fees paid (net)	$0%
Portfolio turnover rate	$41%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Sector Composition

Financials	22.4%
Energy	16.8%
Industrials	14.8%
Health care	8.9%
Utilities	7.3%
Information technology	7.2%
Consumer discretionary	7.0%
Real estate	5.2%
Communication services	5.0%
Consumer staples	2.7%
Materials	1.1%
Municipal bonds	0.1%
Short-term investments and other	1.5%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000001866 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Income Fund

Class Name

Class I

Trading Symbol

JSTIX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Income Fund (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291.

Additional Information Phone Number

800-225-5291

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund (Class)	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Income Fund (Class I/JSTIX)	$54	0.53%

Expenses Paid, Amount

$ 54

Expense Ratio, Percent

0.53%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Income Fund (Class I/JSTIX) returned 4.23% for the year ended May 31, 2024. The most significant factors affecting Fund performance during the period included rising bond yields, stronger-than-expected economic growth, and lowered expectations for interest rate cuts by the U.S. Federal Reserve. Sector performance in the bond market was also a key factor, with high-yield and investment-grade corporate bonds posting the best returns, while U.S. Treasury securities lagged.

TOP PERFORMANCE CONTRIBUTORS

Corporate bonds | High-yield and investment-grade corporate bonds represented nearly a third of the portfolio on average during the period and were the top contributors to the fund’s return.

Emerging markets debt | A small position in credit-related emerging markets bonds, denominated in U.S. dollars, was beneficial as emerging markets bonds were strong performers.

Global bond exposure | Bond holdings in Europe, Australia, and New Zealand also added value.

TOP PERFORMANCE DETRACTORS

Duration (interest rate sensitivity) | Rising bond yields around the globe put downward pressure on bond prices in general, which detracted from fund performance.

Foreign currency exposure | A stronger U.S. dollar during the period weighed on the fund’s exposure to foreign currencies, particularly the Japanese yen and Indonesian rupiah.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.

GROWTH OF $250,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	5 Years	10 Years
Income Fund (Class I/JSTIX)	4.23%	1.72)%	1.96%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.17)%	1.26%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Updated Performance Information Location [Text Block]

Net Assets

$ 1,728,798,995

Holdings Count | Holding

567

Advisory Fees Paid, Amount

$ 6,005,642

Investment Company Portfolio Turnover

34.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,728,798,995%
Total number of portfolio holdings	$567%
Total advisory fees paid (net)	$6,005,642%
Portfolio turnover rate	$34%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Corporate bonds	39.7%
Foreign government obligations	25.3%
U.S. Government	12.7%
U.S. Government Agency	5.4%
Collateralized mortgage obligations – Commercial and residential	4.2%
Convertible bonds	2.4%
Term loans	2.1%
Collateralized mortgage obligations – U.S. Government Agency	2.0%
Municipal bonds	1.8%
Asset backed securities	1.4%
Preferred securities	0.8%
Short-term investments and other	2.2%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000001865 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Income Fund

Class Name

Class C

Trading Symbol

JSTCX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Income Fund (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291.

Additional Information Phone Number

800-225-5291

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund (Class)	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Income Fund (Class C/JSTCX)	$155	1.53%

Expenses Paid, Amount

$ 155

Expense Ratio, Percent

1.53%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Income Fund (Class C/JSTCX) returned 2.84% (excluding sales charges) for the year ended May 31, 2024. The most significant factors affecting Fund performance during the period included rising bond yields, stronger-than-expected economic growth, and lowered expectations for interest rate cuts by the U.S. Federal Reserve. Sector performance in the bond market was also a key factor, with high-yield and investment-grade corporate bonds posting the best returns, while U.S. Treasury securities lagged.

TOP PERFORMANCE CONTRIBUTORS

Corporate bonds | High-yield and investment-grade corporate bonds represented nearly a third of the portfolio on average during the period and were the top contributors to the fund’s return.

Emerging markets debt | A small position in credit-related emerging markets bonds, denominated in U.S. dollars, was beneficial as emerging markets bonds were strong performers.

Global bond exposure | Bond holdings in Europe, Australia, and New Zealand also added value.

TOP PERFORMANCE DETRACTORS

Duration (interest rate sensitivity) | Rising bond yields around the globe put downward pressure on bond prices in general, which detracted from fund performance.

Foreign currency exposure | A stronger U.S. dollar during the period weighed on the fund’s exposure to foreign currencies, particularly the Japanese yen and Indonesian rupiah.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	5 Years	10 Years
Income Fund (Class C/JSTCX)	1.84%	0.67)%	0.91%
Income Fund (Class C/JSTCX)—excluding sales charge	2.84%	0.67)%	0.91%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.17)%	1.26%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Updated Performance Information Location [Text Block]

Net Assets

$ 1,728,798,995

Holdings Count | Holding

567

Advisory Fees Paid, Amount

$ 6,005,642

Investment Company Portfolio Turnover

34.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,728,798,995%
Total number of portfolio holdings	$567%
Total advisory fees paid (net)	$6,005,642%
Portfolio turnover rate	$34%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Corporate bonds	39.7%
Foreign government obligations	25.3%
U.S. Government	12.7%
U.S. Government Agency	5.4%
Collateralized mortgage obligations – Commercial and residential	4.2%
Convertible bonds	2.4%
Term loans	2.1%
Collateralized mortgage obligations – U.S. Government Agency	2.0%
Municipal bonds	1.8%
Asset backed securities	1.4%
Preferred securities	0.8%
Short-term investments and other	2.2%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000212731 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Managed Account Shares Non-Investment-Grade Corporate Bond Portfolio

Class Name

Non-Investment-Grade Corporate Bond Portfolio

Trading Symbol

JMADX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Managed Account Shares Non-Investment-Grade Corporate Bond Portfolio (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-247-0278.

Additional Information Phone Number

800-247-0278

Additional Information Website

jhinvestments.com/underlying-funds

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund			Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Non-Investment-Grade Corporate Bond Portfolio/JMADX			$0	0.00%

Expenses Paid, Amount

$ 0

Expense Ratio, Percent

0.00%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Managed Account Shares Non-Investment-Grade Corporate Bond Portfolio (Non-Investment-Grade Corporate Bond Portfolio/JMADX) returned 11.99% for the year ended May 31, 2024. High-yield bonds produced a positive return in the annual period. The category was helped by the combination of steady economic growth, supportive credit conditions, and healthy investor risk appetites. These factors led to a compression of yield spreads, augmenting the contribution from income.

TOP PERFORMANCE CONTRIBUTORS

Gains from all sectors | At a time of robust performance for the broader market, the fund generated positive returns in nearly all sectors. Some of the strongest gains came from energy refining issuers, where profit margins rose thanks to a widening spread between the prices of crude oil distillates (such as unleaded gasoline) relative to crude oil itself.

Strong performance from the banking sector | The energy, gaming, building materials, and retail sectors were among the top performers, as well.

TOP PERFORMANCE DETRACTORS

Telesat Canada, Inc. | This position also lost ground in the period, as did Kenbourne Invest SA.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	Since inception
Managed Account Shares Non-Investment-Grade Corporate Bond Portfolio (Non-Investment-Grade Corporate Bond Portfolio/JMADX)	11.99%	2.86)%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.42)%
ICE BofA U.S. High Yield Index	11.17%	3.57)%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

Performance Inception Date

Jul. 09, 2019

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Net Assets

$ 59,143,385

Holdings Count | Holding

166

Advisory Fees Paid, Amount

$ 0

Investment Company Portfolio Turnover

56.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$59,143,385%
Total number of portfolio holdings	$166%
Total advisory fees paid (net)	$0%
Portfolio turnover rate	$56%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Sector Composition

Energy	19.6%
Consumer discretionary	17.8%
Industrials	15.3%
Financials	12.3%
Communication services	9.9%
Materials	7.9%
Utilities	5.7%
Health care	3.5%
Consumer staples	2.9%
Information technology	1.3%
Real estate	0.8%
Asset backed securities	0.1%
Short-term investments and other	2.9%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000212732 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Managed Account Shares Securitized Debt Portfolio

Class Name

Securitized Debt Portfolio

Trading Symbol

JMAEX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Managed Account Shares Securitized Debt Portfolio (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-247-0278.

Additional Information Phone Number

800-247-0278

Additional Information Website

jhinvestments.com/documents

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund			Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Securitized Debt Portfolio/JMAEX			$0	0.00%

Expenses Paid, Amount

$ 0

Expense Ratio, Percent

0.00%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Managed Account Shares Securitized Debt Portfolio (Securitized Debt Portfolio/JMAEX) returned 6.64% for the year ended May 31, 2024. The overall bond market posted a gain in the annual period. Bond prices experienced volatility due to the combination of persistent inflation and uncertainty as to when the U.S. Federal Reserve would begin to cut interest rates, but total returns were positive thanks to a sizable contribution from income. Securitized assets performed well and outpaced U.S. Treasuries on the strength of positive credit conditions and investors’ continued appetite for yield.

TOP PERFORMANCE CONTRIBUTORS

Gains for all major segments of the fund | Allocations to asset-backed securities, collateralized mortgage obligations, and commercial mortgage-backed securities (CMBS) all generated positive returns.

Asset-backed securities were the most significant contributors | A home services franchise as well as a data center provider made some of the larger contributions.

TOP PERFORMANCE DETRACTORS

A very narrow group of individual securities | The vast majority of the fund’s holdings produced positive absolute returns, but a handful of securities—including the franchises in Taco Bell and Domino's Pizza —finished with losses.

Commerical mortgage-backed securities | Colt Trust was one of the few CMBS detractors.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	Since inception
Managed Account Shares Securitized Debt Portfolio (Securitized Debt Portfolio/JMAEX)	6.64%	1.72)%
Bloomberg U.S. Aggregate Bond Index	1.31%	(0.42)%
Bloomberg U.S. Securitized MBS ABS CMBS Index	0.76%	(0.89)%


	The Fund has designated Bloomberg U.S. Aggregate Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

Performance Inception Date

Jul. 09, 2019

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Net Assets

$ 128,938,515

Holdings Count | Holding

229

Advisory Fees Paid, Amount

$ 0

Investment Company Portfolio Turnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$128,938,515%
Total number of portfolio holdings	$229%
Total advisory fees paid (net)	$0%
Portfolio turnover rate	$40%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Portfolio Composition

Asset backed securities	66.6%
Collateralized mortgage obligations – Commercial and residential	27.2%
Collateralized mortgage obligations – U.S. Government Agency	5.1%
Short-term investments and other	1.1%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

C000238026 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Managed Account Shares Non-Investment-Grade Municipal Bond Portfolio

Class Name

Non-Investment-Grade Municipal Bond Portfolio

Trading Symbol

JHFMX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Managed Account Shares Non-Investment-Grade Municipal Bond Portfolio (the fund) for the period of June 1, 2023 to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-247-0278.

Material Fund Change Notice [Text Block]

This report describes changes to the fund that occurred during the reporting period.

Additional Information Phone Number

800-247-0278

Additional Information Website

jhinvestments.com/underlying-funds

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund			Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Non-Investment-Grade Municipal Bond Portfolio/JHFMX			$0	0.00%

Expenses Paid, Amount

$ 0

Expense Ratio, Percent

0.00%

Factors Affecting Performance [Text Block]

Management’s Discussion of Fund Performance

SUMMARY OF RESULTS

Managed Account Shares Non-Investment-Grade Municipal Bond Portfolio (Non-Investment-Grade Municipal Bond Portfolio/JHFMX) returned 8.73% for the year ended May 31, 2024. The municipal bond market posted a gain in the annual period. Bond prices experienced volatility due to the combination of persistent inflation and uncertainty as to when the U.S. Federal Reserve would begin to cut interest rates, but total returns were positive thanks to a sizable contribution from income. Municipal securities were further boosted by the combination of steady economic growth, healthy issuer fundamentals, and positive supply-and-demand conditions. High-yield municipals were particularly strong performers at a time of robust investor risk appetites.

TOP PERFORMANCE CONTRIBUTORS

Holdings in virtually all sectors | While market performance was broad-based, some of the best returns came from the multifamily housing, charter schools, and continuing care retirement sectors.

Positions in economic and industrial development bonds | This sector was home to a number of the fund’s top individual performers for the period.

TOP PERFORMANCE DETRACTORS

Montana Facility Finance Authority | This issuer, which provides not-for-profit health care providers with access to low-cost capital, was one of only a few holdings to experience a loss.

South Carolina Jobs – Economic Development Authority | The issuer defaulted on its debt due in part to the lingering effects of COVID-19.

Performance Past Does Not Indicate Future [Text]

Past performance does not guarantee future results.

Line Graph [Table Text Block]

Fund Performance

GROWTH OF $10,000

Average Annual Return [Table Text Block]

AVERAGE ANNUAL TOTAL RETURN	1 Year	Since inception
Managed Account Shares Non-Investment-Grade Municipal Bond Portfolio (Non-Investment-Grade Municipal Bond Portfolio/JHFMX)	8.73%	10.00%
Bloomberg Municipal Bond Index	2.67%	1.25%
Bloomberg High Yield Municipal Bond Index	8.19%	4.72%


	The Fund has designated Bloomberg Municipal Bond Index as its broad-based securities market index in accordance with the revised definition for such an index.

Performance Inception Date

Feb. 08, 2023

No Deduction of Taxes [Text Block]

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

Net Assets

$ 20,466,611

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

Investment Company Portfolio Turnover

13.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$20,466,611%
Total number of portfolio holdings	$93%
Total advisory fees paid (net)	$0%
Portfolio turnover rate	$13%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total net assets of the fund.

Sector Composition

General obligation bonds	6.1% %
Revenue bonds	92.2% %
Development	22.6%
Health care	19.1%
Education	16.4%
Other revenue	12.8%
Transportation	4.9%
Housing	3.9%
Tobacco	3.7%
Utilities	3.1%
Water and sewer	2.5%
Airport	2.5%
Pollution	0.7%
Short-term investments and other	1.7%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.

Material Fund Change [Text Block]

Material Fund Changes

Effective 10-1-23 the fund changed its objective from "To seek as high a level of interest income exempt from federal income tax as is consistent with preservation of capital." to "To seek a high level of interest income exempt from federal income tax."

For more complete information, please refer to the fund’s prospectus. The currently effective prospectus is available at jhinvestments.com/underlying-funds or by calling 800-247-0278.

Material Fund Change Objectives [Text Block]

Summary of Change Legend [Text Block]

For more complete information, please refer to the fund’s prospectus. The currently effective prospectus is available at jhinvestments.com/underlying-funds or by calling 800-247-0278.

Updated Prospectus Phone Number

800-247-0278

Updated Prospectus Web Address

jhinvestments.com/underlying-funds

C000247081 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Managed Account Shares Bond Completion Portfolio

Class Name

Bond Completion Portfolio

Trading Symbol

JHBMX

Annual or Semi-Annual Statement [Text Block]

This annual shareholder report contains important information about the John Hancock Managed Account Shares Bond Completion Portfolio (the fund) for the period of December 18, 2023 (commencement of operations) to May 31, 2024.

Shareholder Report Annual or Semi-Annual

annual shareholder report

Additional Information [Text Block]

You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-247-0278.

Additional Information Phone Number

800-247-0278

Additional Information Website

jhinvestments.com/underlying-funds

Expenses [Text Block]

What were the fund costs during the last year?

(Based on a hypothetical $10,000 investment)

Fund			Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Bond Completion Portfolio/JHBMX			$0	0.00%

Expenses Paid, Amount

$ 0

Expense Ratio, Percent

0.00%

Net Assets

$ 986,361

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

Investment Company Portfolio Turnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$986,361%
Total number of portfolio holdings	$18%
Total advisory fees paid (net)	$0%
Portfolio turnover rate	$10%

Holdings [Text Block]

Graphical Representation of Holdings

The tables below show the investment makeup of the fund, representing percentage of the total investments of the fund.

Sector Composition

U.S. Government Agency	53.3%
U.S. Government	26.3%
Financials	10.0%
Utilities	5.0%
Information technology	1.9%
Health care	1.5%
Short-term investments	2.0%

Quality Composition

Credit Quality Explanation [Text Block]

Credit Ratings Selection [Text Block]

Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc.