This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

<span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">lordabbett.com/FundDocuments</span>

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$50	0.99%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 50

Expense Ratio, Percent

0.99%

^[1]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000003873

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class C

Trading Symbol

LDMCX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$81	1.60%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 81

Expense Ratio, Percent

1.60%

^[2]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000054919

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class F

Trading Symbol

LDMFX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class F	$40	0.79%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 40

Expense Ratio, Percent

0.79%

^[3]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000188264

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class F3

Trading Symbol

LODMX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class F3	$40	0.78%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 40

Expense Ratio, Percent

0.78%

^[4]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000003870

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class I

Trading Symbol

LDMYX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class I	$40	0.79%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 40

Expense Ratio, Percent

0.79%

^[5]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000054921

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class R3

Trading Symbol

LDMRX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$65	1.29%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 65

Expense Ratio, Percent

1.29%

^[6]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000158193

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class R4

Trading Symbol

LDMSX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R4	$53	1.04%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 53

Expense Ratio, Percent

1.04%

^[7]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000158194

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class R5

Trading Symbol

LDMTX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R5	$38	0.75%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 38

Expense Ratio, Percent

0.75%

^[8]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000158195

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Bond Fund

Class Name

Class R6

Trading Symbol

LDMVX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Bond Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$39	0.77%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 39

Expense Ratio, Percent

0.77%

^[9]

AssetsNet

$ 115,727,155

Holdings Count | Holding

229

InvestmentCompanyPortfolioTurnover

31.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$115,727,155
# of Portfolio Holdings	229
Portfolio Turnover Rate	31%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Convertible Bonds	0.04%
Corporate Bonds	28.59%
Foreign Government Obligations	69.07%
Repurchase Agreements	1.00%
Money Market Funds^{Footnote Reference(a)}	1.17%
Time Deposits^{Footnote Reference(a)}	0.13%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000132114

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class A

Trading Symbol

LCDAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$53	1.05%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 53

Expense Ratio, Percent

1.05%

^[10]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000132115

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class C

Trading Symbol

LEDCX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$84	1.67%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 84

Expense Ratio, Percent

1.67%

^[11]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000132116

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class F

Trading Symbol

LCDFX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class F	$48	0.95%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 48

Expense Ratio, Percent

0.95%

^[12]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000188268

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class F3

Trading Symbol

LCDOX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class F3	$37	0.74%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 37

Expense Ratio, Percent

0.74%

^[13]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000132117

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class I

Trading Symbol

LCDIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class I	$43	0.85%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 43

Expense Ratio, Percent

0.85%

^[14]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000132119

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class R3

Trading Symbol

LCDRX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R3	$69	1.36%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 69

Expense Ratio, Percent

1.36%

^[15]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000158199

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class R4

Trading Symbol

LCDSX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R4	$56	1.10%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 56

Expense Ratio, Percent

1.10%

^[16]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000158200

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class R5

Trading Symbol

LCDTX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R5	$42	0.84%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 42

Expense Ratio, Percent

0.84%

^[17]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

C000158201

Shareholder Report [Line Items]

Fund Name

Lord Abbett Emerging Markets Corporate Debt Fund

Class Name

Class R6

Trading Symbol

LCDVX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Lord Abbett Emerging Markets Corporate Debt Fund for the period of January 1, 2025 to June 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at lordabbett.com/FundDocuments. You can also request this information by contacting us at 888-522-2388.

Additional Information Phone Number

888-522-2388

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class R6	$38	0.76%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Expenses Paid, Amount

$ 38

Expense Ratio, Percent

0.76%

^[18]

AssetsNet

$ 35,824,916

Holdings Count | Holding

182

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

(as of June 30, 2025)

Total Net Assets	$35,824,916
# of Portfolio Holdings	182
Portfolio Turnover Rate	34%

Holdings [Text Block]

Portfolio Holdings Presented by Portfolio Allocation	%^{Footnote Reference*}
Common Stocks	0.13%
Convertible Bonds	0.61%
Corporate Bonds	90.75%
Foreign Government Obligations	5.82%
Repurchase Agreements	1.45%
Money Market Funds^{Footnote Reference(a)}	1.12%
Time Deposits^{Footnote Reference(a)}	0.12%
Total	100.00%

Footnote	Description
Footnote*	Represents percent of total investments, which excludes derivatives.
Footnote(a)	Securities were purchased with the cash collateral from loaned securities.

Material Fund Change [Text Block]

Summary of Fund Changes

There were no material fund changes during the period.

Summary of Change Legend [Text Block]

There were no material fund changes during the period.

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