Shareholder Report

6 Months Ended

Nov. 30, 2024

USD ($)

Holding

Shareholder Report [Line Items]

Document Type

N-CSRS

Amendment Flag

false

Registrant Name

JOHN HANCOCK BOND TRUST

Entity Central Index Key

0000315554

Entity Investment Company Type

N-1A

Document Period End Date

Nov. 30, 2024

C000001658 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Government Income Fund

Class Name

Class A

Trading Symbol

JHGIX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Government Income Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Government Income Fund (Class A/JHGIX)	$49	0.96%

Expenses Paid, Amount

$ 49

Expense Ratio, Percent

0.96%

Net Assets

$ 165,996,109

Holdings Count | Holding

112

Investment Company Portfolio Turnover

218.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$165,996,109
Total number of portfolio holdings	112
Portfolio turnover rate	218%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government	68.9%
U.S. Government Agency	27.6%
Collateralized mortgage obligations – U.S. Government Agency	2.5%
Collateralized mortgage obligations – Commercial and residential	0.2%
Short-term investments and other	0.8%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000001660 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Government Income Fund

Class Name

Class C

Trading Symbol

TCGIX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Government Income Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Government Income Fund (Class C/TCGIX)	$87	1.71%

Expenses Paid, Amount

$ 87

Expense Ratio, Percent

1.71%

Net Assets

$ 165,996,109

Holdings Count | Holding

112

Investment Company Portfolio Turnover

218.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$165,996,109
Total number of portfolio holdings	112
Portfolio turnover rate	218%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government	68.9%
U.S. Government Agency	27.6%
Collateralized mortgage obligations – U.S. Government Agency	2.5%
Collateralized mortgage obligations – Commercial and residential	0.2%
Short-term investments and other	0.8%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000173133 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Government Income Fund

Class Name

Class I

Trading Symbol

JGIFX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Government Income Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Government Income Fund (Class I/JGIFX)	$36	0.71%

Expenses Paid, Amount

$ 36

Expense Ratio, Percent

0.71%

Net Assets

$ 165,996,109

Holdings Count | Holding

112

Investment Company Portfolio Turnover

218.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$165,996,109
Total number of portfolio holdings	112
Portfolio turnover rate	218%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government	68.9%
U.S. Government Agency	27.6%
Collateralized mortgage obligations – U.S. Government Agency	2.5%
Collateralized mortgage obligations – Commercial and residential	0.2%
Short-term investments and other	0.8%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000193020 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Government Income Fund

Class Name

Class R6

Trading Symbol

JTSRX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Government Income Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Government Income Fund (Class R6/JTSRX)	$31	0.60%

Expenses Paid, Amount

$ 31

Expense Ratio, Percent

0.60%

Net Assets

$ 165,996,109

Holdings Count | Holding

112

Investment Company Portfolio Turnover

218.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$165,996,109
Total number of portfolio holdings	112
Portfolio turnover rate	218%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government	68.9%
U.S. Government Agency	27.6%
Collateralized mortgage obligations – U.S. Government Agency	2.5%
Collateralized mortgage obligations – Commercial and residential	0.2%
Short-term investments and other	0.8%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000001735 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock High Yield Fund

Class Name

Class A

Trading Symbol

JHHBX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock High Yield Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
High Yield Fund (Class A/JHHBX)	$47	0.91%

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

0.91%

Net Assets

$ 1,239,832,993

Holdings Count | Holding

392

Investment Company Portfolio Turnover

18.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,239,832,993
Total number of portfolio holdings	392
Portfolio turnover rate	18%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	85.4%
Term loans	6.8%
Asset-backed securities	2.5%
U.S. Government Agency	1.9%
Preferred securities	0.4%
Collateralized mortgage obligations – Commercial and residential	0.1%
Short-term investments and other	2.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000001737 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock High Yield Fund

Class Name

Class C

Trading Symbol

JHYCX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock High Yield Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
High Yield Fund (Class C/JHYCX)	$85	1.66%

Expenses Paid, Amount

$ 85

Expense Ratio, Percent

1.66%

Net Assets

$ 1,239,832,993

Holdings Count | Holding

392

Investment Company Portfolio Turnover

18.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,239,832,993
Total number of portfolio holdings	392
Portfolio turnover rate	18%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	85.4%
Term loans	6.8%
Asset-backed securities	2.5%
U.S. Government Agency	1.9%
Preferred securities	0.4%
Collateralized mortgage obligations – Commercial and residential	0.1%
Short-term investments and other	2.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000051988 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock High Yield Fund

Class Name

Class I

Trading Symbol

JYHIX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock High Yield Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
High Yield Fund (Class I/JYHIX)	$34	0.66%

Expenses Paid, Amount

$ 34

Expense Ratio, Percent

0.66%

Net Assets

$ 1,239,832,993

Holdings Count | Holding

392

Investment Company Portfolio Turnover

18.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,239,832,993
Total number of portfolio holdings	392
Portfolio turnover rate	18%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	85.4%
Term loans	6.8%
Asset-backed securities	2.5%
U.S. Government Agency	1.9%
Preferred securities	0.4%
Collateralized mortgage obligations – Commercial and residential	0.1%
Short-term investments and other	2.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000128461 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock High Yield Fund

Class Name

Class NAV

No Trading Symbol Flag

true

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock High Yield Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 800-344-1029.

Additional Information Phone Number

800-344-1029

Additional Information Website

jhinvestments.com/underlying-funds

Expenses [Text Block]

What were the fund costs during the last six months ?

(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
High Yield Fund (Class NAV)	$28	0.55%

Expenses Paid, Amount

$ 28

Expense Ratio, Percent

0.55%

Net Assets

$ 1,239,832,993

Holdings Count | Holding

392

Investment Company Portfolio Turnover

18.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,239,832,993
Total number of portfolio holdings	392
Portfolio turnover rate	18%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	85.4%
Term loans	6.8%
Asset-backed securities	2.5%
U.S. Government Agency	1.9%
Preferred securities	0.4%
Collateralized mortgage obligations – Commercial and residential	0.1%
Short-term investments and other	2.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000106437 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock High Yield Fund

Class Name

Class R6

Trading Symbol

JFHYX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock High Yield Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
High Yield Fund (Class R6/JFHYX)	$28	0.55%

Expenses Paid, Amount

$ 28

Expense Ratio, Percent

0.55%

Net Assets

$ 1,239,832,993

Holdings Count | Holding

392

Investment Company Portfolio Turnover

18.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,239,832,993
Total number of portfolio holdings	392
Portfolio turnover rate	18%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	85.4%
Term loans	6.8%
Asset-backed securities	2.5%
U.S. Government Agency	1.9%
Preferred securities	0.4%
Collateralized mortgage obligations – Commercial and residential	0.1%
Short-term investments and other	2.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000001738 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Investment Grade Bond Fund

Class Name

Class A

Trading Symbol

TAUSX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Investment Grade Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Investment Grade Bond Fund (Class A/TAUSX)	$38	0.74%

Expenses Paid, Amount

$ 38

Expense Ratio, Percent

0.74%

Net Assets

$ 3,503,281,561

Holdings Count | Holding

859

Investment Company Portfolio Turnover

55.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$3,503,281,561
Total number of portfolio holdings	859
Portfolio turnover rate	55%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government Agency	37.9%
Corporate bonds	31.4%
U.S. Government	18.3%
Asset-backed securities	6.9%
Collateralized mortgage obligations – Commercial and residential	3.4%
Collateralized mortgage obligations – U.S. Government Agency	0.9%
Municipal bonds	0.3%
Short-term investments and other	0.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000001740 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Investment Grade Bond Fund

Class Name

Class C

Trading Symbol

TCUSX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Investment Grade Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Investment Grade Bond Fund (Class C/TCUSX)	$76	1.49%

Expenses Paid, Amount

$ 76

Expense Ratio, Percent

1.49%

Net Assets

$ 3,503,281,561

Holdings Count | Holding

859

Investment Company Portfolio Turnover

55.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$3,503,281,561
Total number of portfolio holdings	859
Portfolio turnover rate	55%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government Agency	37.9%
Corporate bonds	31.4%
U.S. Government	18.3%
Asset-backed securities	6.9%
Collateralized mortgage obligations – Commercial and residential	3.4%
Collateralized mortgage obligations – U.S. Government Agency	0.9%
Municipal bonds	0.3%
Short-term investments and other	0.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000001741 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Investment Grade Bond Fund

Class Name

Class I

Trading Symbol

TIUSX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Investment Grade Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Investment Grade Bond Fund (Class I/TIUSX)	$25	0.49%

Expenses Paid, Amount

$ 25

Expense Ratio, Percent

0.49%

Net Assets

$ 3,503,281,561

Holdings Count | Holding

859

Investment Company Portfolio Turnover

55.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$3,503,281,561
Total number of portfolio holdings	859
Portfolio turnover rate	55%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government Agency	37.9%
Corporate bonds	31.4%
U.S. Government	18.3%
Asset-backed securities	6.9%
Collateralized mortgage obligations – Commercial and residential	3.4%
Collateralized mortgage obligations – U.S. Government Agency	0.9%
Municipal bonds	0.3%
Short-term investments and other	0.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000153916 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Investment Grade Bond Fund

Class Name

Class R2

Trading Symbol

JIGBX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Investment Grade Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Investment Grade Bond Fund (Class R2/JIGBX)	$45	0.87%

Expenses Paid, Amount

$ 45

Expense Ratio, Percent

0.87%

Net Assets

$ 3,503,281,561

Holdings Count | Holding

859

Investment Company Portfolio Turnover

55.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$3,503,281,561
Total number of portfolio holdings	859
Portfolio turnover rate	55%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government Agency	37.9%
Corporate bonds	31.4%
U.S. Government	18.3%
Asset-backed securities	6.9%
Collateralized mortgage obligations – Commercial and residential	3.4%
Collateralized mortgage obligations – U.S. Government Agency	0.9%
Municipal bonds	0.3%
Short-term investments and other	0.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000153917 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Investment Grade Bond Fund

Class Name

Class R4

Trading Symbol

JIGMX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Investment Grade Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Investment Grade Bond Fund (Class R4/JIGMX)	$33	0.64%

Expenses Paid, Amount

$ 33

Expense Ratio, Percent

0.64%

Net Assets

$ 3,503,281,561

Holdings Count | Holding

859

Investment Company Portfolio Turnover

55.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$3,503,281,561
Total number of portfolio holdings	859
Portfolio turnover rate	55%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government Agency	37.9%
Corporate bonds	31.4%
U.S. Government	18.3%
Asset-backed securities	6.9%
Collateralized mortgage obligations – Commercial and residential	3.4%
Collateralized mortgage obligations – U.S. Government Agency	0.9%
Municipal bonds	0.3%
Short-term investments and other	0.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000153918 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Investment Grade Bond Fund

Class Name

Class R6

Trading Symbol

JIGEX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Investment Grade Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Investment Grade Bond Fund (Class R6/JIGEX)	$20	0.38%

Expenses Paid, Amount

$ 20

Expense Ratio, Percent

0.38%

Net Assets

$ 3,503,281,561

Holdings Count | Holding

859

Investment Company Portfolio Turnover

55.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$3,503,281,561
Total number of portfolio holdings	859
Portfolio turnover rate	55%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

U.S. Government Agency	37.9%
Corporate bonds	31.4%
U.S. Government	18.3%
Asset-backed securities	6.9%
Collateralized mortgage obligations – Commercial and residential	3.4%
Collateralized mortgage obligations – U.S. Government Agency	0.9%
Municipal bonds	0.3%
Short-term investments and other	0.9%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000176013 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock ESG Core Bond Fund

Class Name

Class A

Trading Symbol

JBOAX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock ESG Core Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
ESG Core Bond Fund (Class A/JBOAX)	$41	0.81%

Expenses Paid, Amount

$ 41

Expense Ratio, Percent

0.81%

Net Assets

$ 45,416,629

Holdings Count | Holding

145

Investment Company Portfolio Turnover

14.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$45,416,629
Total number of portfolio holdings	145
Portfolio turnover rate	14%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	39.3%
U.S. Government	33.7%
Asset-backed securities	11.9%
Collateralized mortgage obligations – U.S. Government Agency	4.3%
Collateralized mortgage obligations – Commercial and residential	4.1%
Municipal bonds	3.0%
U.S. Government Agency	2.4%
Short-term investments and other	1.3%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000176015 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock ESG Core Bond Fund

Class Name

Class I

Trading Symbol

JBOIX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock ESG Core Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
ESG Core Bond Fund (Class I/JBOIX)	$29	0.56%

Expenses Paid, Amount

$ 29

Expense Ratio, Percent

0.56%

Net Assets

$ 45,416,629

Holdings Count | Holding

145

Investment Company Portfolio Turnover

14.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$45,416,629
Total number of portfolio holdings	145
Portfolio turnover rate	14%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	39.3%
U.S. Government	33.7%
Asset-backed securities	11.9%
Collateralized mortgage obligations – U.S. Government Agency	4.3%
Collateralized mortgage obligations – Commercial and residential	4.1%
Municipal bonds	3.0%
U.S. Government Agency	2.4%
Short-term investments and other	1.3%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000176019 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock ESG Core Bond Fund

Class Name

Class R6

Trading Symbol

JBORX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock ESG Core Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
ESG Core Bond Fund (Class R6/JBORX)	$24	0.46%

Expenses Paid, Amount

$ 24

Expense Ratio, Percent

0.46%

Net Assets

$ 45,416,629

Holdings Count | Holding

145

Investment Company Portfolio Turnover

14.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$45,416,629
Total number of portfolio holdings	145
Portfolio turnover rate	14%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	39.3%
U.S. Government	33.7%
Asset-backed securities	11.9%
Collateralized mortgage obligations – U.S. Government Agency	4.3%
Collateralized mortgage obligations – Commercial and residential	4.1%
Municipal bonds	3.0%
U.S. Government Agency	2.4%
Short-term investments and other	1.3%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000213126 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Short Duration Bond Fund

Class Name

Class A

Trading Symbol

JSNAX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Short Duration Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Short Duration Bond Fund (Class A/JSNAX)	$32	0.62%

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.62%

Net Assets

$ 1,166,127,407

Holdings Count | Holding

368

Investment Company Portfolio Turnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,166,127,407
Total number of portfolio holdings	368
Portfolio turnover rate	40%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	68.9%
U.S. Government	14.1%
Asset-backed securities	13.9%
Collateralized mortgage obligations – Commercial and residential	1.2%
Collateralized mortgage obligations – U.S. Government Agency	0.2%
Term loans	0.2%
Other assets and liabilities, net	1.5%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000213127 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Short Duration Bond Fund

Class Name

Class C

Trading Symbol

JSNCX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Short Duration Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Short Duration Bond Fund (Class C/JSNCX)	$70	1.37%

Expenses Paid, Amount

$ 70

Expense Ratio, Percent

1.37%

Net Assets

$ 1,166,127,407

Holdings Count | Holding

368

Investment Company Portfolio Turnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,166,127,407
Total number of portfolio holdings	368
Portfolio turnover rate	40%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	68.9%
U.S. Government	14.1%
Asset-backed securities	13.9%
Collateralized mortgage obligations – Commercial and residential	1.2%
Collateralized mortgage obligations – U.S. Government Agency	0.2%
Term loans	0.2%
Other assets and liabilities, net	1.5%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000213128 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Short Duration Bond Fund

Class Name

Class I

Trading Symbol

JSNIX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Short Duration Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Short Duration Bond Fund (Class I/JSNIX)	$19	0.37%

Expenses Paid, Amount

$ 19

Expense Ratio, Percent

0.37%

Net Assets

$ 1,166,127,407

Holdings Count | Holding

368

Investment Company Portfolio Turnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,166,127,407
Total number of portfolio holdings	368
Portfolio turnover rate	40%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	68.9%
U.S. Government	14.1%
Asset-backed securities	13.9%
Collateralized mortgage obligations – Commercial and residential	1.2%
Collateralized mortgage obligations – U.S. Government Agency	0.2%
Term loans	0.2%
Other assets and liabilities, net	1.5%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000213124 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Short Duration Bond Fund

Class Name

Class NAV

No Trading Symbol Flag

true

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Short Duration Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 800-344-1029.

Additional Information Phone Number

800-344-1029

Additional Information Website

jhinvestments.com/underlying-funds

Expenses [Text Block]

What were the fund costs during the last six months ?

(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
Short Duration Bond Fund (Class NAV)	$13	0.26%

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.26%

Net Assets

$ 1,166,127,407

Holdings Count | Holding

368

Investment Company Portfolio Turnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,166,127,407
Total number of portfolio holdings	368
Portfolio turnover rate	40%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	68.9%
U.S. Government	14.1%
Asset-backed securities	13.9%
Collateralized mortgage obligations – Commercial and residential	1.2%
Collateralized mortgage obligations – U.S. Government Agency	0.2%
Term loans	0.2%
Other assets and liabilities, net	1.5%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.

C000213125 [Member]

Shareholder Report [Line Items]

Fund Name

John Hancock Short Duration Bond Fund

Class Name

Class R6

Trading Symbol

JSNRX

Annual or Semi-Annual Statement [Text Block]

This semiannual shareholder report contains important information about the John Hancock Short Duration Bond Fund (the fund) for the period of June 1, 2024 to November 30, 2024.

Shareholder Report Annual or Semi-Annual

semi-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 six months ?

(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
Short Duration Bond Fund (Class R6/JSNRX)	$14	0.27%

Expenses Paid, Amount

$ 14

Expense Ratio, Percent

0.27%

Net Assets

$ 1,166,127,407

Holdings Count | Holding

368

Investment Company Portfolio Turnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics

Fund net assets	$1,166,127,407
Total number of portfolio holdings	368
Portfolio turnover rate	40%

Holdings [Text Block]

Graphical Representation of Holdings

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

Portfolio Composition

Corporate bonds	68.9%
U.S. Government	14.1%
Asset-backed securities	13.9%
Collateralized mortgage obligations – Commercial and residential	1.2%
Collateralized mortgage obligations – U.S. Government Agency	0.2%
Term loans	0.2%
Other assets and liabilities, net	1.5%

Quality Composition

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 11-30-24 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]

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 11-30-24 and do not reflect subsequent downgrades or upgrades, if any.

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.