v3.25.1
Shareholder Report
 6 Months Ended
Mar. 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name SEI INSTITUTIONAL INTERNATIONAL TRUST
Entity Central Index Key 0000835597
Entity Investment Company Type N-1A
Document Period End Date Mar. 31, 2025
C000017607  
Shareholder Report [Line Items]  
Fund Name International Equity Fund
Class Name Class F
Trading Symbol SEITX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class F Shares of the International Equity Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
International Equity Fund, Class F Shares
$55
1.09%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.07%.
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.09% [1]
AssetsNet $ 3,445,653,000
Holdings Count | Holding 744
Advisory Fees Paid, Amount $ 8,828
InvestmentCompanyPortfolioTurnover 45.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$3,445,653
744
$8,828
45%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Futures Contracts
0.0%
Total Return Swaps
0.2%
Other Countries
17.8%
Sweden
2.3%
Denmark
2.8%
China
3.4%
Italy
3.5%
Switzerland
4.0%
Australia
4.1%
Netherlands
4.6%
France
6.7%
United Kingdom
11.1%
Germany
11.6%
Japan
12.6%
United States
13.1%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
U.S. Treasury Bill, 4.26%, 8/28/2025
3.0%
Roche Holding AG
2.4%
SAP SE
1.8%
Alibaba Group Holding Ltd
0.9%
Equinor ASA
0.9%
ING Groep NV
0.9%
Sea Ltd ADR
0.9%
Daimler Truck Holding AG
0.9%
Novartis AG
0.9%
GSK PLC
0.9%
FootnoteDescription
Footnote(A)
Short-Term Investments are not shown in the top ten chart.
C000017606  
Shareholder Report [Line Items]  
Fund Name International Equity Fund
Class Name Class I
Trading Symbol SEEIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class I Shares of the International Equity Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
International Equity Fund, Class I Shares
$67
1.34%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.32%.
Expenses Paid, Amount $ 67
Expense Ratio, Percent 1.34% [2]
AssetsNet $ 3,445,653,000
Holdings Count | Holding 744
Advisory Fees Paid, Amount $ 8,828
InvestmentCompanyPortfolioTurnover 45.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$3,445,653
744
$8,828
45%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Futures Contracts
0.0%
Total Return Swaps
0.2%
Other Countries
17.8%
Sweden
2.3%
Denmark
2.8%
China
3.4%
Italy
3.5%
Switzerland
4.0%
Australia
4.1%
Netherlands
4.6%
France
6.7%
United Kingdom
11.1%
Germany
11.6%
Japan
12.6%
United States
13.1%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
U.S. Treasury Bill, 4.26%, 8/28/2025
3.0%
Roche Holding AG
2.4%
SAP SE
1.8%
Alibaba Group Holding Ltd
0.9%
Equinor ASA
0.9%
ING Groep NV
0.9%
Sea Ltd ADR
0.9%
Daimler Truck Holding AG
0.9%
Novartis AG
0.9%
GSK PLC
0.9%
FootnoteDescription
Footnote(A)
Short-Term Investments are not shown in the top ten chart.
C000147407  
Shareholder Report [Line Items]  
Fund Name International Equity Fund
Class Name Class Y
Trading Symbol SEFCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class Y Shares of the International Equity Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
International Equity Fund, Class Y Shares
$42
0.84%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.82%.
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.84% [3]
AssetsNet $ 3,445,653,000
Holdings Count | Holding 744
Advisory Fees Paid, Amount $ 8,828
InvestmentCompanyPortfolioTurnover 45.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$3,445,653
744
$8,828
45%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Futures Contracts
0.0%
Total Return Swaps
0.2%
Other Countries
17.8%
Sweden
2.3%
Denmark
2.8%
China
3.4%
Italy
3.5%
Switzerland
4.0%
Australia
4.1%
Netherlands
4.6%
France
6.7%
United Kingdom
11.1%
Germany
11.6%
Japan
12.6%
United States
13.1%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
U.S. Treasury Bill, 4.26%, 8/28/2025
3.0%
Roche Holding AG
2.4%
SAP SE
1.8%
Alibaba Group Holding Ltd
0.9%
Equinor ASA
0.9%
ING Groep NV
0.9%
Sea Ltd ADR
0.9%
Daimler Truck Holding AG
0.9%
Novartis AG
0.9%
GSK PLC
0.9%
FootnoteDescription
Footnote(A)
Short-Term Investments are not shown in the top ten chart.
C000017609  
Shareholder Report [Line Items]  
Fund Name Emerging Markets Equity Fund
Class Name Class F
Trading Symbol SIEMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class F Shares of the Emerging Markets Equity Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Emerging Markets Equity Fund, Class F Shares
$62
1.28%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.26%.
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.28% [4]
AssetsNet $ 1,399,874,000
Holdings Count | Holding 479
Advisory Fees Paid, Amount $ 5,043
InvestmentCompanyPortfolioTurnover 30.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$1,399,874
479
$5,043
30%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Futures Contracts
0.0%
Other Countries
11.4%
Thailand
1.5%
Hong Kong
1.6%
Hungary
2.0%
United Arab Emirates
2.2%
Indonesia
2.3%
Mexico
2.7%
South Africa
5.3%
Brazil
6.8%
South Korea
11.4%
India
11.8%
Taiwan
13.2%
China
26.4%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
Taiwan Semiconductor Manufacturing Co Ltd
6.3%
Alibaba Group Holding Ltd
3.8%
Tencent Holdings Ltd
2.9%
Samsung Electronics Co Ltd
2.0%
Naspers Ltd, Cl N
2.0%
Meituan, Cl B
1.5%
HDFC Bank Ltd ADR
1.5%
Emaar Properties PJSC
1.4%
Kia Corp
1.3%
Itau Unibanco Holding SA ADR
1.3%
FootnoteDescription
Footnote(A)
Cash Equivalents are not shown in the top ten chart.
C000147409  
Shareholder Report [Line Items]  
Fund Name Emerging Markets Equity Fund
Class Name Class Y
Trading Symbol SEQFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class Y Shares of the Emerging Markets Equity Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Emerging Markets Equity Fund, Class Y Shares
$50
1.03%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.01%.
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.03% [5]
AssetsNet $ 1,399,874,000
Holdings Count | Holding 479
Advisory Fees Paid, Amount $ 5,043
InvestmentCompanyPortfolioTurnover 30.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$1,399,874
479
$5,043
30%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Futures Contracts
0.0%
Other Countries
11.4%
Thailand
1.5%
Hong Kong
1.6%
Hungary
2.0%
United Arab Emirates
2.2%
Indonesia
2.3%
Mexico
2.7%
South Africa
5.3%
Brazil
6.8%
South Korea
11.4%
India
11.8%
Taiwan
13.2%
China
26.4%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Percentage of Total Net AssetsFootnote Reference(A)
Taiwan Semiconductor Manufacturing Co Ltd
6.3%
Alibaba Group Holding Ltd
3.8%
Tencent Holdings Ltd
2.9%
Samsung Electronics Co Ltd
2.0%
Naspers Ltd, Cl N
2.0%
Meituan, Cl B
1.5%
HDFC Bank Ltd ADR
1.5%
Emaar Properties PJSC
1.4%
Kia Corp
1.3%
Itau Unibanco Holding SA ADR
1.3%
FootnoteDescription
Footnote(A)
Cash Equivalents are not shown in the top ten chart.
C000017608  
Shareholder Report [Line Items]  
Fund Name International Fixed Income Fund
Class Name Class F
Trading Symbol SEFIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class F Shares of the International Fixed Income Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
International Fixed Income Fund, Class F Shares
$51
0.98%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.96%.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.98% [6]
AssetsNet $ 357,360,000
Holdings Count | Holding 1,237
Advisory Fees Paid, Amount $ 552
InvestmentCompanyPortfolioTurnover 50.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$357,360
1,237
$552
50%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Forward Contracts
-1.9%
Credit Default Swaps
0.0%
Futures Contracts
0.1%
Interest Rate Swaps
0.2%
Other Countries
25.3%
Romania
2.5%
Australia
3.3%
Spain
3.5%
Italy
4.3%
Mexico
4.6%
Germany
4.7%
France
5.0%
United Kingdom
5.4%
Canada
5.5%
United States
7.5%
China
10.8%
Japan
14.1%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Coupon Rate
Maturity Date
Percentage of Total Net AssetsFootnote Reference(A)
U.S. Treasury Bill
4.236%
06/26/25
2.1%
Bank of China
3.200%
10/18/25
1.7%
Japan Government Thirty Year Bond
2.300%
03/20/40
1.5%
Kingdom of Belgium Government Bond
3.100%
06/22/35
1.4%
Colombian TES
6.000%
04/28/28
1.4%
China Government Bond
2.550%
10/15/28
1.4%
Industrial & Commercial Bank of China
3.200%
10/25/25
1.3%
European Union Bill
0.000%
05/09/25
1.2%
Italy Buoni Poliennali Del Tesoro
3.350%
07/01/29
1.2%
Japan Treasury Discount Bill
0.000%
05/12/25
1.2%
FootnoteDescription
Footnote(A)
Short-Term Investments are not shown in the top ten chart.
C000147408  
Shareholder Report [Line Items]  
Fund Name International Fixed Income Fund
Class Name Class Y
Trading Symbol SIFIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class Y Shares of the International Fixed Income Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
International Fixed Income Fund, Class Y Shares
$38
0.73%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.71%.
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.73% [7]
AssetsNet $ 357,360,000
Holdings Count | Holding 1,237
Advisory Fees Paid, Amount $ 552
InvestmentCompanyPortfolioTurnover 50.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$357,360
1,237
$552
50%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Forward Contracts
-1.9%
Credit Default Swaps
0.0%
Futures Contracts
0.1%
Interest Rate Swaps
0.2%
Other Countries
25.3%
Romania
2.5%
Australia
3.3%
Spain
3.5%
Italy
4.3%
Mexico
4.6%
Germany
4.7%
France
5.0%
United Kingdom
5.4%
Canada
5.5%
United States
7.5%
China
10.8%
Japan
14.1%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Coupon Rate
Maturity Date
Percentage of Total Net AssetsFootnote Reference(A)
U.S. Treasury Bill
4.236%
06/26/25
2.1%
Bank of China
3.200%
10/18/25
1.7%
Japan Government Thirty Year Bond
2.300%
03/20/40
1.5%
Kingdom of Belgium Government Bond
3.100%
06/22/35
1.4%
Colombian TES
6.000%
04/28/28
1.4%
China Government Bond
2.550%
10/15/28
1.4%
Industrial & Commercial Bank of China
3.200%
10/25/25
1.3%
European Union Bill
0.000%
05/09/25
1.2%
Italy Buoni Poliennali Del Tesoro
3.350%
07/01/29
1.2%
Japan Treasury Discount Bill
0.000%
05/12/25
1.2%
FootnoteDescription
Footnote(A)
Short-Term Investments are not shown in the top ten chart.
C000017610  
Shareholder Report [Line Items]  
Fund Name Emerging Markets Debt Fund
Class Name Class F
Trading Symbol SITEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class F Shares of the Emerging Markets Debt Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Emerging Markets Debt Fund, Class F Shares
$54
1.08%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.06%.
Expenses Paid, Amount $ 54
Expense Ratio, Percent 1.08% [8]
AssetsNet $ 901,293,000
Holdings Count | Holding 893
Advisory Fees Paid, Amount $ 1,736
InvestmentCompanyPortfolioTurnover 101.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$901,293
893
$1,736
101%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Written Options
0.0%
Credit Default Swaps
0.0%
Futures Contracts
0.0%
Total Return Swaps
0.0%
Forward Contracts
0.0%
Purchased Options
0.1%
Interest Rate Swaps
0.2%
Other Countries
41.6%
Egypt
2.4%
Romania
2.5%
Supra-National
2.7%
Peru
2.8%
Poland
3.2%
Brazil
3.4%
Turkey
4.3%
Colombia
5.0%
Malaysia
5.7%
South Africa
6.5%
Indonesia
6.7%
Mexico
8.5%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Coupon Rate
Maturity Date
Percentage of Total Net AssetsFootnote Reference(A)
Indonesia Treasury Bond
6.750%
07/15/35
1.0%
Mexican Bonos
8.500%
03/02/28
0.9%
Republic of South Africa Government Bond, ZAR
8.750%
01/31/44
0.9%
Malaysia Government Bond, MYR
3.955%
09/15/25
0.9%
Peru Government Bond
5.400%
08/12/34
0.8%
Petroleos Mexicanos
7.690%
01/23/50
0.8%
Mexican Bonos, MXN
7.750%
11/13/42
0.8%
Republic of South Africa Government Bond, ZAR
8.000%
01/31/30
0.8%
Republic of South Africa Government Bond, ZAR
8.750%
02/28/48
0.8%
Petroleos Mexicanos
6.750%
09/21/47
0.8%
FootnoteDescription
Footnote(A)
Short-Term Investments are not shown in the top ten chart.
C000147410  
Shareholder Report [Line Items]  
Fund Name Emerging Markets Debt Fund
Class Name Class Y
Trading Symbol SIEDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Class Y Shares of the Emerging Markets Debt Fund (the "Fund") for the period from October 1, 2024 to March 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information about the Fund at https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports. You can also request this information by contacting us at 610-676-1000. 
Additional Information Phone Number 610-676-1000
Additional Information Website https://www.seic.com/mutual-fund-documentation/prospectuses-and-reports
Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Emerging Markets Debt Fund, Class Y Shares
$41
0.83%Footnote Reference(1)
FootnoteDescription
Footnote(1)
The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.81%.
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.83% [9]
AssetsNet $ 901,293,000
Holdings Count | Holding 893
Advisory Fees Paid, Amount $ 1,736
InvestmentCompanyPortfolioTurnover 101.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics as of March 31, 2025

Total Net Assets (000's)
Number of Holdings
Total Advisory Fees Paid (000's)
Portfolio Turnover Rate
$901,293
893
$1,736
101%
Holdings [Text Block]

Country WeightingsFootnote Reference*

Holdings Chart
Value
Value
Written Options
0.0%
Credit Default Swaps
0.0%
Futures Contracts
0.0%
Total Return Swaps
0.0%
Forward Contracts
0.0%
Purchased Options
0.1%
Interest Rate Swaps
0.2%
Other Countries
41.6%
Egypt
2.4%
Romania
2.5%
Supra-National
2.7%
Peru
2.8%
Poland
3.2%
Brazil
3.4%
Turkey
4.3%
Colombia
5.0%
Malaysia
5.7%
South Africa
6.5%
Indonesia
6.7%
Mexico
8.5%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.
Largest Holdings [Text Block]

Top Ten Holdings

Holding Name
Coupon Rate
Maturity Date
Percentage of Total Net AssetsFootnote Reference(A)
Indonesia Treasury Bond
6.750%
07/15/35
1.0%
Mexican Bonos
8.500%
03/02/28
0.9%
Republic of South Africa Government Bond, ZAR
8.750%
01/31/44
0.9%
Malaysia Government Bond, MYR
3.955%
09/15/25
0.9%
Peru Government Bond
5.400%
08/12/34
0.8%
Petroleos Mexicanos
7.690%
01/23/50
0.8%
Mexican Bonos, MXN
7.750%
11/13/42
0.8%
Republic of South Africa Government Bond, ZAR
8.000%
01/31/30
0.8%
Republic of South Africa Government Bond, ZAR
8.750%
02/28/48
0.8%
Petroleos Mexicanos
6.750%
09/21/47
0.8%
FootnoteDescription
Footnote(A)
Short-Term Investments are not shown in the top ten chart.
[1] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.07%.
[2] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.32%.
[3] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.82%.
[4] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.26%.
[5] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.01%.
[6] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.96%.
[7] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.71%.
[8] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 1.06%.
[9] The expense ratio includes a proxy fee expense. Had this expense been excluded the ratio would have been 0.81%.