X0101 24F-2NT LIVE 0001107414 XXXXXXXX 333-30810 false false N-1A State Street Institutional Investment Trust One Lincoln Street Boston MA X1 02111 State Street Target Retirement 2035 Fund S000046038 true State Street Target Retirement 2040 Fund S000046039 true State Street Equity 500 Index II Portfolio S000046029 true State Street Global All Cap Equity ex-U.S. Index Portfolio S000046032 true State Street Institutional U.S. Government Money Market Fund S000010701 true State Street Target Retirement 2025 Fund S000046036 true State Street Target Retirement 2060 Fund S000046025 true State Street Institutional Treasury Money Market Fund S000019117 true State Street Aggregate Bond Index Portfolio S000046031 true State Street ESG Liquid Reserves Fund S000065954 true State Street Target Retirement 2045 Fund S000046040 true State Street Global All Cap Equity ex-U.S. Index Fund S000044030 true State Street Target Retirement 2030 Fund S000046037 true State Street Target Retirement 2065 Fund S000067360 true STATE STREET EMERGING MARKETS EQUITY INDEX FUND S000050542 true State Street China Equity Select Fund S000065844 true STATE STREET SMALL/MID CAP EQUITY INDEX FUND S000050331 true State Street Target Retirement 2020 Fund S000046035 true State Street Institutional Liquid Reserves Fund S000010700 true STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO S000050332 true State Street Target Retirement Fund S000046033 true State Street Equity 500 Index Fund S000010695 true STATE STREET INTERNATIONAL VALUE SPOTLIGHT FUND S000049202 true State Street Treasury Obligations Money Market Fund S000058519 true State Street Aggregate Bond Index Fund S000010699 true State Street Target Retirement 2055 Fund S000046024 true State Street Target Retirement 2050 Fund S000046023 true State Street Institutional Treasury Plus Money Market Fund S000019118 true STATE STREET HEDGED INTERNATIONAL DEVELOPED EQUITY INDEX FUND S000049192 true 811-09819 333-30810 12/31/2022 false false 2184284122505.26 2169999944490.07 0 2169999944490.07 14284178015.19 0 0.0001102 1574116.42 0 0 0 1574116.42 /s/ Chad C. Hallett Chad C. Hallett, Deputy Treasurer 03/15/2023