Expense Example (International Index Trust, USD $)	12 Months Ended
May 01, 2011
Series I, International Index Trust
Expense Example:
Year 1	$ 57
Year 3	179
Year 5	313
Year 10	701
Series II, International Index Trust
Expense Example:
Year 1	78
Year 3	243
Year 5	422
Year 10	942
Series NAV, International Index Trust
Expense Example:
Year 1	52
Year 3	164
Year 5	285
Year 10	$ 640

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The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.

+ References

Reference 1: 1
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 3
-Paragraph 4
-Subsection instructions

+ Details

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- Definition

+ References

Reference 1: 1
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 3
-Paragraph 1
-Subparagraph 2
-Subsection example

+ Details

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- Definition

+ References

Reference 1: 1
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 3
-Paragraph 1
-Subparagraph 2
-Subsection example

+ Details

Name:	rr_ExpenseExampleYear05
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- Definition

+ References

Reference 1: 1
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 3
-Paragraph 1
-Subparagraph 2
-Subsection example

+ Details

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