Performance Management - SIIT Screened World Equity Ex-US Fund

Oct. 03, 2025

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 a full calendar year. 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: 19.32% (6/30/20)
Worst Quarter: -22.98% (3/31/20)
The Fund's total return from January 1, 2025 to June 30, 2025 was 17.70%.

Bar Chart Closing [Text Block]

Best Quarter: 19.32% (6/30/20)
Worst Quarter: -22.98% (3/31/20)
The Fund's total return from January 1, 2025 to June 30, 2025 was 17.70%.

Year to Date Return, Label [Optional Text]

total return

Bar Chart, Year to Date Return

17.70%

Bar Chart, Year to Date Return, Date

Jun. 30, 2025

Highest Quarterly Return, Label [Optional Text]

Best Quarter:

Highest Quarterly Return

19.32%

Highest Quarterly Return, Date

Jun. 30, 2020

Lowest Quarterly Return, Label [Optional Text]

Worst Quarter:

Lowest Quarterly Return

(22.98%)

Lowest Quarterly Return, Date

Mar. 31, 2020

Performance Table Heading

Average Annual Total Returns (for the periods ended December 31, 2024)

Performance Table Narrative

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

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 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]

Screened World Equity Ex-US Fund	1 Year			5 Years			10 Years			Since Inception (6/30/2008)
Return Before Taxes		6.89	%		6.07	%		6.90	%		4.16	%
Return After Taxes on Distributions		5.94	%		4.42	%		5.81	%		3.45	%
Return After Taxes on Distributions and Sale of Fund Shares		4.92	%		4.63	%		5.49	%		3.34	%
MSCI All Country World Ex-US Net Index Return (reflects no deduction for fees or expenses)		5.53	%		4.10	%		4.80	%		3.28	%

Index No Deduction for Fees, Expenses, or Taxes [Text]

(reflects no deduction for fees or expenses)

Performance Availability Phone [Text]

1-800-DIAL-SEI