v3.25.4
Performance Management
Jan. 28, 2026
INTERNATIONAL EQUITY FUND - Class F Prospectus | SIT INTERNATIONAL EQUITY FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by

showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Bar Chart [Table]

  Best Quarter: 20.28% (06/30/2020)
Worst Quarter: -25.26% (03/31/2020)







 
Bar Chart Closing [Text Block]
Best Quarter: 20.28% (06/30/2020)
Worst Quarter: -25.26% (03/31/2020)

 

Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 20.28%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (25.26%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund's investment strategy.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]

International Equity Fund — Class F Shares

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(12/20/1989)
 

Return Before Taxes

   

37.03

%

   

9.81

%

   

8.61

%

   

4.73

%

 

Return After Taxes on Distributions

   

31.63

%

   

7.49

%

   

7.34

%

   

3.84

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

24.74

%

   

7.32

%

   

6.81

%

   

3.73

%

 

MSCI ACWI ex-USA Index (net) (reflects no deduction for fees or expenses)

   

32.39

%

   

7.91

%

   

8.41

%

   

5.46

%†​

 

MSCI EAFE Index Return (net) (reflects no deduction for fees or expenses)

   

31.22

%

   

8.92

%

   

8.18

%

   

5.29

%

 

†​ Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (12/20/1989 – 12/31/1989). Annualization calculation of the inception to date returns is based on the actual inception date (12/20/1989).

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees or expenses)
Performance Availability Phone [Text] 1-800-DIAL-SEI
EMERGING MARKETS EQUITY FUND - Class F Prospectus | SIT EMERGING MARKETS EQUITY FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Bar Chart [Table]

  Best Quarter: 20.87% (06/30/2020)
Worst Quarter: -25.69% (03/31/2020)







 
Bar Chart Closing [Text Block]
Best Quarter: 20.87% (06/30/2020)
Worst Quarter: -25.69% (03/31/2020)

 

Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 20.87%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (25.69%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund's investment strategy.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]

Emerging Markets Equity Fund — Class F Shares

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(1/17/1995)
 

Return Before Taxes

   

35.91

%

   

3.71

%

   

7.76

%

   

4.82

%

 

Return After Taxes on Distributions

   

34.54

%

   

3.04

%

   

7.39

%

   

4.34

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

22.19

%

   

3.02

%

   

6.47

%

   

4.15

%

 

MSCI ACWI ex-USA Index (net) (reflects no deduction for fees or expenses)

   

32.39

%

   

7.91

%

   

8.41

%

   

6.14

%*

 
MSCI Emerging Markets Index Return (net) (reflects no deduction for
fees or expenses)
   

33.57

%

   

4.20

%

   

8.42

%

   

NA†​

   

†​ The MSCI Emerging Markets Index Return (net) for the "Since Inception" period is not provided because returns for the MSCI Emerging Markets Index Return (net) are not available prior to 1999.

* Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (1/17/1995 – 1/31/1995). Annualization calculation of the inception to date returns is based on the actual inception date (1/17/1995).

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees or expenses)
Performance Availability Phone [Text] 1-800-DIAL-SEI
INTERNATIONAL FIXED INCOME FUND - Class F Prospectus | SIT INTERNATIONAL FIXED INCOME FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Bar Chart [Table]

  Best Quarter: 5.83% (12/31/2023)
Worst Quarter: -4.10% (06/30/2022)







 
Bar Chart Closing [Text Block]
Best Quarter: 5.83% (12/31/2023)
Worst Quarter: -4.10% (06/30/2022)
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 5.83%
Highest Quarterly Return, Date Dec. 31, 2023
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (4.10%)
Lowest Quarterly Return, Date Jun. 30, 2022
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund's investment strategy.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance [Table]

International Fixed Income Fund — Class F Shares

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(9/1/1993)
 

Return Before Taxes

   

2.78

%

   

0.05

%

   

1.78

%

   

3.56

%

 

Return After Taxes on Distributions

   

1.65

%

   

-1.26

%

   

0.70

%

   

2.09

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

1.65

%

   

-0.51

%

   

0.91

%

   

2.19

%

 
Bloomberg Global Aggregate Index (reflects no deduction for
fees, expenses or taxes)
   

8.17

%

   

-2.15

%

   

1.26

%

   

3.77

%†​

 
Bloomberg Global Aggregate ex-US Index, Hedged Return (reflects no
deduction for fees, expenses or taxes)
   

2.80

%

   

0.79

%

   

2.58

%

   

4.81

%

 

†​ Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (9/1/1993 – 9/30/1993). Annualization calculation of the inception to date returns is based on the actual inception date (9/1/1993).

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses or taxes)
Performance Availability Phone [Text] 1-800-DIAL-SEI
EMERGING MARKETS DEBT FUND - Class F Prospectus | SIT EMERGING MARKETS DEBT FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Performance Additional Market Index [Text] This table compares the Fund's average annual total returns to those of the Bloomberg Global Aggregate Index (a broad-based securities market index), and two additional indexes with characteristics relevant to the Fund's investment strategy. The Fund's additional indexes are the J.P. Morgan EMBI Global Diversified Index Return and the Fund's blended benchmark that is composed of the J.P. Morgan Emerging Markets Bond Index (EMBI) Global Diversified Index and the J.P. Morgan Government Bond Index-Emerging Markets (GBI-EM) Global Diversified Index weighted 50%/50%
Bar Chart [Table]

  Best Quarter: 12.67% (06/30/2020)
Worst Quarter: -16.72% (03/31/2020)







 
Bar Chart Closing [Text Block]
Best Quarter: 12.67% (06/30/2020)
Worst Quarter: -16.72% (03/31/2020)

 

Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 12.67%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (16.72%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of the Bloomberg Global Aggregate Index (a broad-based securities market index), and two additional indexes with characteristics relevant to the Fund's investment strategy. The Fund's additional indexes are the J.P. Morgan EMBI Global Diversified Index Return and the Fund's blended benchmark that is composed of the J.P. Morgan Emerging Markets Bond Index (EMBI) Global Diversified Index and the J.P. Morgan Government Bond Index-Emerging Markets (GBI-EM) Global Diversified Index weighted 50%/50%.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance [Table]

Emerging Markets Debt Fund — Class F Shares

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(6/26/1997)
 

Return Before Taxes

   

19.85

%

   

2.15

%

   

4.21

%

   

6.52

%

 

Return After Taxes on Distributions

   

16.73

%

   

0.32

%

   

2.82

%

   

4.14

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

11.63

%

   

0.79

%

   

2.64

%

   

4.18

%

 
Bloomberg Global Aggregate Index (reflects no deduction for
fees, expenses or taxes)
   

8.17

%

   

-2.15

%

   

1.26

%

   

3.44

%*

 
J.P. Morgan EMBI Global Diversified Index Return (reflects no deduction for
fees, expenses or taxes)
   

14.30

%

   

1.78

%

   

4.40

%

   

7.07

%

 
The Fund's Blended Benchmark Return (reflects no deduction for
fees, expenses or taxes)
   

16.79

%

   

1.48

%

   

4.19

%

   

NA†​

   

* Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (6/26/1997 – 6/30/1997). Annualization calculation of the inception to date returns is based on the actual inception date (6/26/1997).

†​ The Blended Benchmark Return for the "Since Inception" period is not provided because returns for the J.P. Morgan GBI-EM Global Diversified Index Return are not available prior to 2003.

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses or taxes)
Performance Availability Phone [Text] 1-800-DIAL-SEI
INTERNATIONAL EQUITY FUND - Class I Prospectus | SIT INTERNATIONAL EQUITY FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by

showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Bar Chart [Table]

  Best Quarter: 20.23% (06/30/2020)
Worst Quarter: -25.35% (03/31/2020)







 
Bar Chart Closing [Text Block]
Best Quarter: 20.23% (06/30/2020)
Worst Quarter: -25.35% (03/31/2020)

 

Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 20.23%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (25.35%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund's investment strategy.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]

International Equity Fund — Class I Shares*

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(12/20/1989)
 

Return Before Taxes

   

36.60

%

   

9.53

%

   

8.33

%

   

4.48

%

 

Return After Taxes on Distributions

   

31.62

%

   

7.34

%

   

7.17

%

   

3.54

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

24.39

%

   

7.14

%

   

6.61

%

   

3.43

%

 

MSCI ACWI ex-USA Index (net) (reflects no deduction for fees or expenses)

   

32.39

%

   

7.91

%

   

8.41

%

   

5.46

%†​

 

MSCI EAFE Index Return (net) (reflects no deduction for fees or expenses)

   

31.22

%

   

8.92

%

   

8.18

%

   

5.29

%

 

* The Fund's Class I Shares commenced operations on January 4, 2002. Therefore, the Fund's average annual total returns for the periods prior to that time are based on the average annual total returns of the Class F Shares, adjusted for the higher expenses of the Class I Shares.

†​ Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (12/20/1989 – 12/31/1989). Annualization calculation of the inception to date returns is based on the actual inception date (12/20/1989).

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees or expenses)
Performance Availability Phone [Text] 1-800-DIAL-SEI
INTERNATIONAL EQUITY FUND - Class Y Prospectus | SIT INTERNATIONAL EQUITY FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Bar Chart [Table]

  Best Quarter: 20.30% (06/30/2020)
Worst Quarter: -25.22% (03/31/2020)
 
Bar Chart Closing [Text Block]
Best Quarter: 20.30% (06/30/2020)
Worst Quarter: -25.22% (03/31/2020)

 

Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 20.30%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (25.22%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund's investment strategy.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]

International Equity Fund*

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(12/20/1989)
 

Return Before Taxes

   

37.28

%

   

10.06

%

   

8.87

%

   

4.81

%

 

Return After Taxes on Distributions

   

31.78

%

   

7.66

%

   

7.53

%

   

3.80

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

24.92

%

   

7.49

%

   

7.00

%

   

3.70

%

 

MSCI ACWI ex-USA Index (net) (reflects no deduction for fees or expenses)

   

32.39

%

   

7.91

%

   

8.41

%

   

5.46

%†​

 

MSCI EAFE Index Return (net) (reflects no deduction for fees or expenses)

   

31.22

%

   

8.92

%

   

8.18

%

   

5.29

%

 

* The Fund's Class Y Shares commenced operations on December 31, 2014. For periods prior to December 31, 2014, the performance of the Fund's Class F Shares has been used. Returns for Class Y Shares would have been substantially similar to those of Class F Shares and would have differed only to the extent that the classes do not have the same total annual fund operating expenses.

†​ Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (12/20/1989 – 12/31/1989). Annualization calculation of the inception to date returns is based on the actual inception date (12/20/1989).

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees or expenses)
Performance Availability Phone [Text] 1-800-DIAL-SEI
EMERGING MARKETS EQUITY FUND - Class Y Prospectus | SIT EMERGING MARKETS EQUITY FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Bar Chart [Table]

  Best Quarter: 20.87% (06/30/2020)
Worst Quarter: -25.63% (03/31/2020)
 
Bar Chart Closing [Text Block]

Best Quarter: 20.87% (06/30/2020)
Worst Quarter: -25.63% (03/31/2020)

 

Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 20.87%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (25.63%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund's investment strategy.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance [Table]

Emerging Markets Equity Fund*

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(1/17/1995)
 

Return Before Taxes

   

36.26

%

   

3.97

%

   

8.04

%

   

4.92

%

 

Return After Taxes on Distributions

   

34.78

%

   

3.21

%

   

7.59

%

   

4.35

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

22.42

%

   

3.19

%

   

6.68

%

   

4.16

%

 

MSCI ACWI ex-USA Index (net) (reflects no deduction for fees or expenses)

   

32.39

%

   

7.91

%

   

8.41

%

   

6.14

%**

 
MSCI Emerging Markets Index Return (net) (reflects no deduction for
fees or expenses)
   

33.57

%

   

4.20

%

   

8.42

%

   

NA†​

   

* The Fund's Class Y Shares commenced operations on December 31, 2014. For periods prior to December 31, 2014, the performance of the Fund's Class F Shares has been used. Returns for Class Y Shares would have been substantially similar to those of Class F Shares and would have differed only to the extent that the classes do not have the same total annual fund operating expenses.

** Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (1/17/1995 – 1/31/1995). Annualization calculation of the inception to date returns is based on the actual inception date (1/17/1995).

†​ The MSCI Emerging Markets Index Return (net) for the "Since Inception" period is not provided because returns for the MSCI Emerging Markets Index Return (net) are not available prior to 1999.

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees or expenses)
Performance Availability Phone [Text] 1-800-DIAL-SEI
INTERNATIONAL FIXED INCOME FUND - Class Y Prospectus | SIT INTERNATIONAL FIXED INCOME FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Bar Chart [Table]

  Best Quarter: 5.80% (12/31/2023)
Worst Quarter: -4.09% (06/30/2022)
 
Bar Chart Closing [Text Block]
Best Quarter: 5.80% (12/31/2023)
Worst Quarter: -4.09% (06/30/2022)
Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 5.80%
Highest Quarterly Return, Date Dec. 31, 2023
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (4.09%)
Lowest Quarterly Return, Date Jun. 30, 2022
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of a broad-based securities market index and an additional index with characteristics relevant to the Fund's investment strategy.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance [Table]

International Fixed Income Fund*

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(9/1/1993)
 

Return Before Taxes

   

2.90

%

   

0.29

%

   

2.02

%

   

3.64

%

 

Return After Taxes on Distributions

   

1.67

%

   

-1.08

%

   

0.87

%

   

2.14

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

1.72

%

   

-0.36

%

   

1.07

%

   

2.24

%

 
Bloomberg Global Aggregate Index (reflects no deduction for fees,
expenses or taxes)
   

8.17

%

   

-2.15

%

   

1.26

%

   

3.77

%†​

 
Bloomberg Global Aggregate ex-US Index, Hedged Return (reflects no
deduction for fees, expenses or taxes)
   

2.80

%

   

0.79

%

   

2.58

%

   

4.81

%

 

* The Fund's Class Y Shares commenced operations on October 30, 2015. For periods prior to October 30, 2015, the performance of the Fund's Class F Shares has been used. Returns for Class Y Shares would have been substantially similar to those of Class F Shares and would have differed only to the extent that the classes do not have the same total annual fund operating expenses.

†​ Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (9/1/1993 – 9/30/1993). Annualization calculation of the inception to date returns is based on the actual inception date (9/1/1993).

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses or taxes)
Performance Availability Phone [Text] 1-800-DIAL-SEI
EMERGING MARKETS DEBT FUND - Class Y Prospectus | SIT EMERGING MARKETS DEBT FUND  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance Information
Performance Narrative [Text Block]

The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The performance information shown is based on full calendar years. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Performance Past Does Not Indicate Future [Text] The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The bar chart and the performance table below provide some indication of the risks of investing in the Class Y Shares of the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance.
Performance Additional Market Index [Text] This table compares the Fund's average annual total returns to those of the Bloomberg Global Aggregate Index (a broad-based securities market index), and two additional indexes with characteristics relevant to the Fund's investment strategy. The Fund's additional indexes are the J.P. Morgan EMBI Global Diversified Index Return and the Fund's blended benchmark that is composed of the J.P. Morgan Emerging Markets Bond Index (EMBI) Global Diversified Index and the J.P. Morgan Government Bond Index-Emerging Markets (GBI-EM) Global Diversified Index weighted 50%/50%.
Bar Chart [Table]

  Best Quarter: 12.77% (06/30/2020)
Worst Quarter: -16.65% (03/31/2020)







 
Bar Chart Closing [Text Block]

Best Quarter: 12.77% (06/30/2020)
Worst Quarter: -16.65% (03/31/2020)

 

Highest Quarterly Return, Label [Optional Text] Best Quarter:
Highest Quarterly Return 12.77%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Worst Quarter:
Lowest Quarterly Return (16.65%)
Lowest Quarterly Return, Date Mar. 31, 2020
Performance Table Heading Average Annual Total Returns (for the periods ended December 31, 2025)
Performance Table Narrative

This table compares the Fund's average annual total returns to those of the Bloomberg Global Aggregate Index (a broad-based securities market index), and two additional indexes with characteristics relevant to the Fund's investment strategy. The Fund's additional indexes are the J.P. Morgan EMBI Global Diversified Index Return and the Fund's blended benchmark that is composed of the J.P. Morgan Emerging Markets Bond Index (EMBI) Global Diversified Index and the J.P. Morgan Government Bond Index-Emerging Markets (GBI-EM) Global Diversified Index weighted 50%/50%.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher In some cases, the Fund's return after taxes may exceed the Fund's return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance [Table]

Emerging Markets Debt Fund*

 

1 Year

 

5 Years

 

10 Years

  Since
Inception
(6/26/1997)
 

Return Before Taxes

   

20.10

%

   

2.40

%

   

4.47

%

   

6.62

%

 

Return After Taxes on Distributions

   

16.82

%

   

0.41

%

   

2.92

%

   

4.19

%

 

Return After Taxes on Distributions and Sale of Fund Shares

   

11.77

%

   

0.91

%

   

2.77

%

   

4.23

%

 

Bloomberg Global Aggregate Index (reflects no deduction for fees, expenses or taxes)

   

8.17

%

   

-2.15

%

   

1.26

%

   

3.44

%**

 
J.P. Morgan EMBI Global Diversified Index Return (reflects no deduction for
fees, expenses or taxes)
   

14.30

%

   

1.78

%

   

4.40

%

   

7.07

%

 
The Fund's Blended Benchmark Return (reflects no deduction for fees,
expenses or taxes)
   

16.79

%

   

1.48

%

   

4.19

%

   

NA†​

   

* The Fund's Class Y Shares commenced operations on December 31, 2014. For periods prior to December 31, 2014, the performance of the Fund's Class F Shares has been used. Returns for Class Y Shares would have been substantially similar to those of Class F Shares and would have differed only to the extent that the classes do not have the same total annual fund operating expenses.

** Benchmark returns since inception do not include the return for the partial month following inception date of the Fund (6/26/1997 – 6/30/1997). Annualization calculation of the inception to date returns is based on the actual inception date (6/26/1997).

†​ The Blended Benchmark Return for the "Since Inception" period is not provided because returns for the J.P. Morgan GBI-EM Global Diversified Index Return are not available prior to 2003.

Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses or taxes)
Performance Availability Phone [Text] 1-800-DIAL-SEI