C000253542State Street Institutional U.S. Government Money Market FundFR_924QSGII3_3.627224_2030-12-31U.S. Treasury BillsFR_912797UA3U.S. Treasury BillsFR_912797TZ0U.S. Treasury BillsFR_912797SW8Bloomberg Enhanced Roll Yield Index Total Return SwapFR_99S2CHX02Bloomberg Enhanced Roll Yield Index Total Return SwapFR_99S2CW3L6U.S. Treasury BillsFR_912797TT4Bloomberg Enhanced Roll Yield Index Total Return SwapFR_99S2D7N04Bloomberg Enhanced Roll Yield Index Total Return SwapFR_99S2CLQ01Bloomberg Enhanced Roll Yield Index Total Return SwapFR_99S2CLQ35No Trading Symbol [Flag]AssetsNetInvestmentCompanyPortfolioTurnover