v3.26.1
Shareholder Report
 6 Months Ended
May 31, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name DELAWARE GROUP GLOBAL & INTERNATIONAL FUNDS
Entity Central Index Key 0000875610
Entity Investment Company Type N-1A
Document Period End Date May 31, 2026
C000010979 [Member]  
Shareholder Report [Line Items]  
Fund Name Nomura Emerging Markets Fund
Class Name Class A
Trading Symbol DEMAX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about Nomura Emerging Markets Fund (Fund) for the period of December 1, 2025, to May 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at nomuraassetmanagement.com/literature. You can also request this information by contacting us at 800 523-1918, weekdays from 8:30am to 6:00pm ET.
Additional Information Phone Number 800 523-1918
Additional Information Website nomuraassetmanagement.com/literature
Expenses [Text Block]
What were the Fund's costs for the last six months ?
(Based on a hypothetical $10,000 investment)
Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment^
Class A $114 1.41%
^
Annualized.
Expenses Paid, Amount $ 114
Expense Ratio, Percent 1.41% [1]
Net Assets $ 14,436,616,052
Holdings Count | Holding 108 [2]
Advisory Fees Paid, Amount $ 51,718,214
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund statistics (as of May 31, 2026)
Fund net assets $14,436,616,052
Total number of portfolio holdings* 108
Total advisory fees paid (during reporting period) $51,718,214
Portfolio turnover rate 1%
*
Excludes cash and cash equivalents.
Holdings [Text Block]
Fund holdings (as of May 31, 2026)
The tables below show the investment makeup of the Fund, with each category representing a percentage of the total net assets of the Fund.
Country allocation
South Korea 63.07%
Taiwan 17.29%
China 5.09%
India 4.60%
Brazil 2.57%
Mexico 1.85%
Türkiye 0.46%
Peru 0.44%
Indonesia 0.35%
Argentina 0.35%
Sector allocation*
Information Technology 44.52%
Industrials 34.24%
Energy 3.78%
Communication Services 3.57%
Financials 3.03%
Consumer Discretionary 2.89%
Consumer Staples 1.79%
Materials 1.51%
Healthcare 1.01%
Utilities 0.25%
Real Estate 0.21%
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
*  Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
**  Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
Largest Holdings [Text Block]
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
** Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
C000171463 [Member]  
Shareholder Report [Line Items]  
Fund Name Nomura Emerging Markets Fund
Class Name Class R6
Trading Symbol DEMZX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about Nomura Emerging Markets Fund (Fund) for the period of December 1, 2025, to May 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at nomuraassetmanagement.com/literature. You can also request this information by contacting us at 800 523-1918, weekdays from 8:30am to 6:00pm ET.
Additional Information Phone Number 800 523-1918
Additional Information Website nomuraassetmanagement.com/literature
Expenses [Text Block]
What were the Fund's costs for the last six months ?
(Based on a hypothetical $10,000 investment)
Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment^
Class R6 $86 1.06%
^
Annualized.
Expenses Paid, Amount $ 86
Expense Ratio, Percent 1.06% [3]
Net Assets $ 14,436,616,052
Holdings Count | Holding 108 [4]
Advisory Fees Paid, Amount $ 51,718,214
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund statistics (as of May 31, 2026)
Fund net assets $14,436,616,052
Total number of portfolio holdings* 108
Total advisory fees paid (during reporting period) $51,718,214
Portfolio turnover rate 1%
*
Excludes cash and cash equivalents.
Holdings [Text Block]
Fund holdings (as of May 31, 2026)
The tables below show the investment makeup of the Fund, with each category representing a percentage of the total net assets of the Fund.
Country allocation
South Korea 63.07%
Taiwan 17.29%
China 5.09%
India 4.60%
Brazil 2.57%
Mexico 1.85%
Türkiye 0.46%
Peru 0.44%
Indonesia 0.35%
Argentina 0.35%
Sector allocation*
Information Technology 44.52%
Industrials 34.24%
Energy 3.78%
Communication Services 3.57%
Financials 3.03%
Consumer Discretionary 2.89%
Consumer Staples 1.79%
Materials 1.51%
Healthcare 1.01%
Utilities 0.25%
Real Estate 0.21%
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
*  Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
**  Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
Largest Holdings [Text Block]
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
** Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
C000010981 [Member]  
Shareholder Report [Line Items]  
Fund Name Nomura Emerging Markets Fund
Class Name Class C
Trading Symbol DEMCX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about Nomura Emerging Markets Fund (Fund) for the period of December 1, 2025, to May 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at nomuraassetmanagement.com/literature. You can also request this information by contacting us at 800 523-1918, weekdays from 8:30am to 6:00pm ET.
Additional Information Phone Number 800 523-1918
Additional Information Website nomuraassetmanagement.com/literature
Expenses [Text Block]
What were the Fund's costs for the last six months ?
(Based on a hypothetical $10,000 investment)
Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment^
Class C $174 2.16%
^
Annualized.
Expenses Paid, Amount $ 174
Expense Ratio, Percent 2.16% [5]
Net Assets $ 14,436,616,052
Holdings Count | Holding 108 [6]
Advisory Fees Paid, Amount $ 51,718,214
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund statistics (as of May 31, 2026)
Fund net assets $14,436,616,052
Total number of portfolio holdings* 108
Total advisory fees paid (during reporting period) $51,718,214
Portfolio turnover rate 1%
*
Excludes cash and cash equivalents.
Holdings [Text Block]
Fund holdings (as of May 31, 2026)
The tables below show the investment makeup of the Fund, with each category representing a percentage of the total net assets of the Fund.
Country allocation
South Korea 63.07%
Taiwan 17.29%
China 5.09%
India 4.60%
Brazil 2.57%
Mexico 1.85%
Türkiye 0.46%
Peru 0.44%
Indonesia 0.35%
Argentina 0.35%
Sector allocation*
Information Technology 44.52%
Industrials 34.24%
Energy 3.78%
Communication Services 3.57%
Financials 3.03%
Consumer Discretionary 2.89%
Consumer Staples 1.79%
Materials 1.51%
Healthcare 1.01%
Utilities 0.25%
Real Estate 0.21%
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
*  Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
**  Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
Largest Holdings [Text Block]
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
** Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
C000031063 [Member]  
Shareholder Report [Line Items]  
Fund Name Nomura Emerging Markets Fund
Class Name Class R
Trading Symbol DEMRX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about Nomura Emerging Markets Fund (Fund) for the period of December 1, 2025, to May 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at nomuraassetmanagement.com/literature. You can also request this information by contacting us at 800 523-1918, weekdays from 8:30am to 6:00pm ET.
Additional Information Phone Number 800 523-1918
Additional Information Website nomuraassetmanagement.com/literature
Expenses [Text Block]
What were the Fund's costs for the last six months ?
(Based on a hypothetical $10,000 investment)
Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment^
Class R $134 1.66%
^
Annualized.
Expenses Paid, Amount $ 134
Expense Ratio, Percent 1.66% [7]
Net Assets $ 14,436,616,052
Holdings Count | Holding 108 [8]
Advisory Fees Paid, Amount $ 51,718,214
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund statistics (as of May 31, 2026)
Fund net assets $14,436,616,052
Total number of portfolio holdings* 108
Total advisory fees paid (during reporting period) $51,718,214
Portfolio turnover rate 1%
*
Excludes cash and cash equivalents.
Holdings [Text Block]
Fund holdings (as of May 31, 2026)
The tables below show the investment makeup of the Fund, with each category representing a percentage of the total net assets of the Fund.
Country allocation
South Korea 63.07%
Taiwan 17.29%
China 5.09%
India 4.60%
Brazil 2.57%
Mexico 1.85%
Türkiye 0.46%
Peru 0.44%
Indonesia 0.35%
Argentina 0.35%
Sector allocation*
Information Technology 44.52%
Industrials 34.24%
Energy 3.78%
Communication Services 3.57%
Financials 3.03%
Consumer Discretionary 2.89%
Consumer Staples 1.79%
Materials 1.51%
Healthcare 1.01%
Utilities 0.25%
Real Estate 0.21%
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
*  Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
**  Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
Largest Holdings [Text Block]
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
**Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
C000010982 [Member]  
Shareholder Report [Line Items]  
Fund Name Nomura Emerging Markets Fund
Class Name Institutional Class
Trading Symbol DEMIX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about Nomura Emerging Markets Fund (Fund) for the period of December 1, 2025, to May 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at nomuraassetmanagement.com/literature. You can also request this information by contacting us at 800 523-1918, weekdays from 8:30am to 6:00pm ET.
Additional Information Phone Number 800 523-1918
Additional Information Website nomuraassetmanagement.com/literature
Expenses [Text Block]
What were the Fund's costs for the last six months ?
(Based on a hypothetical $10,000 investment)
Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment^
Institutional Class $94 1.16%
^
Annualized.
Expenses Paid, Amount $ 94
Expense Ratio, Percent 1.16% [9]
Net Assets $ 14,436,616,052
Holdings Count | Holding 108 [10]
Advisory Fees Paid, Amount $ 51,718,214
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund statistics (as of May 31, 2026)
Fund net assets $14,436,616,052
Total number of portfolio holdings* 108
Total advisory fees paid (during reporting period) $51,718,214
Portfolio turnover rate 1%
*
Excludes cash and cash equivalents.
Holdings [Text Block]
Fund holdings (as of May 31, 2026)
The tables below show the investment makeup of the Fund, with each category representing a percentage of the total net assets of the Fund.
Country allocation
South Korea 63.07%
Taiwan 17.29%
China 5.09%
India 4.60%
Brazil 2.57%
Mexico 1.85%
Türkiye 0.46%
Peru 0.44%
Indonesia 0.35%
Argentina 0.35%
Sector allocation*
Information Technology 44.52%
Industrials 34.24%
Energy 3.78%
Communication Services 3.57%
Financials 3.03%
Consumer Discretionary 2.89%
Consumer Staples 1.79%
Materials 1.51%
Healthcare 1.01%
Utilities 0.25%
Real Estate 0.21%
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
*  Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
**  Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
Largest Holdings [Text Block]
Top 10 equity holdings
SK Square** 29.50%
SK hynix** 18.55%
Taiwan Semiconductor Manufacturing 13.28%
Samsung Electronics 7.58%
Samsung C&T 4.01%
MediaTek 3.72%
Reliance Industries 2.02%
Alibaba Group Holding ADR 1.74%
Samsung Electronics 1.10%
Tencent Holdings 1.01%
** Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
[1]
Annualized.
[2]
Excludes cash and cash equivalents.
[3]
Annualized.
[4]
Excludes cash and cash equivalents.
[5]
Annualized.
[6]
Excludes cash and cash equivalents.
[7]
Annualized.
[8]
Excludes cash and cash equivalents.
[9]
Annualized.
[10]
Excludes cash and cash equivalents.