Management Fees (as a percentage of Assets) Management Fees Distribution and Service (12b-1) Fees Distribution and Service (12b-1) Fees Other Expenses (as a percentage of Assets): Other Expenses Other Expenses Expenses (as a percentage of Assets) Total Expenses Total Annual Fund Operating Expenses Fee Waiver or Reimbursement Fee Waiver or Reimbursement Expense Limitation Fee Waiver and Expense Limitation Fee Waiver and Expense Limitation Net Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses After Fee Waiver and Expense Limitation Net Expenses Total Annual Fund Operating Expenses After Expense Limitation Prospectus: Document [Axis] Prospectus Series [Axis] Series Risk/Return: Risk/Return [Heading] Objective [Heading] Objective, Primary [Text Block] Expense [Heading] Expense Narrative [Text Block] Operating Expenses Caption [Text] Expense Example [Heading] Expense Example Narrative [Text Block] Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Strategy [Heading] Strategy Narrative [Text Block] Risk [Heading] Risk Narrative [Text Block] Bar Chart and Performance Table [Heading] Performance Narrative [Text Block] Operating Expenses: Annual Fund Operating Expenses Expense Example: Expense Example Expense Example, By Year, Column [Text] Expense Example, with Redemption, 1 Year 1 Year 1 Year Expense Example, with Redemption, 3 Years 3 Years 3 Years Expense Example, with Redemption, 10 Years 10 Years 10 Years ANNUAL TOTAL RETURN Bar Chart Table: Annual Return Caption [Text] Annual Return 2001 2001 Annual Return 2002 2002 Annual Return 2003 2003 Annual Return 2004 2004 Annual Return 2005 2005 Annual Return 2006 2006 Annual Return 2007 2007 Annual Return 2008 2008 Annual Return 2009 2009 Average Annual Return: AVERAGE ANNUAL TOTAL RETURN Label 1 Year 1 Year 5 Years 5 Years 10 Years 10 Years Since Inception Since Inception Inception Date Inception Date Document Type Document Period End Date Registrant Name Central Index Key Amendment Flag Document Creation Date Document Effective Date Prospectus Date Portfolio Turnover, Rate Risk Lose Money [Text] Risk Not Insured Depository Institution [Text] Performance Availability Website Address [Text] Performance Past Does Not Indicate Future [Text] Highest Quarterly Return, Label Highest Quarterly Return, Date Highest Quarterly Return Lowest Quarterly Return, Label Lowest Quarterly Return, Date Lowest Quarterly Return Index No Deduction for Fees, Expenses, Taxes [Text] Caption Prospectus Share Class [Axis] Share Class Domain Portfolio Turnover Alt Abstract Portfolio Turnover. Portfolio Turnover Expense Example, with Redemption, 5 Years 5 Years Fund Fees And Expenses Abstract Fees and Expenses of the Fund Fund fees and expenses. Fund Past Performance Abstract Performance Fund past performance. Performance Table Closing [Text Block] Annual Fund Operating Expenses [Table] Expense Example, With Redemption [Table] Bar Chart [Table] Bar Chart Closing [Text Block] Performance [Table] Performance Information Illustrates Variability of Returns [Text] Summary - Institutional Shares - Goldman Sachs Strategic International Equity Fund Prospectus One. Institutional Shares, Goldman Sachs Strategic International Equity Fund Goldman Sachs Strategic International Equity Fund - Institutional Shares. Annual Return 2010 2010 MSCI EAFE (net) Index (unhedged) MSCI EAFE (net) Index (unhedged). Summary - Institutional Shares - Goldman Sachs Large Cap Value Fund Prospectus Two. Goldman Sachs Large Cap Value Fund Goldman Sachs Large Cap Value Fund. Institutional Shares, Goldman Sachs Large Cap Value Fund Goldman Sachs Large Cap Value Fund - Institutional Shares. Russell 1000 Value Index Russell 1000 Value Index. Goldman Sachs Mid Cap Value Fund Goldman Sachs Mid Cap Value Fund. Summary - Institutional Shares - Goldman Sachs Mid Cap Value Fund Prospectus Three. Institutional Shares, Goldman Sachs Mid Cap Value Fund Goldman Sachs Mid Cap Value Fund - Institutional Shares. Summary - Institutional Shares - Goldman Sachs Structured Small Cap Equity Fund Prospectus Four. Goldman Sachs Structured Small Cap Equity Fund Goldman Sachs Structured Small Cap Equity Fund. Institutional Shares, Goldman Sachs Structured Small Cap Equity Fund Goldman Sachs Structured Small Cap Equity Fund - Institutional Shares. Russell Midcap Value Index Russell Midcap Value Index. Russell 2000 Index Russell 2000 Index. Summary - Institutional Shares - Goldman Sachs Strategic Growth Fund Prospectus Five. Goldman Sachs Strategic Growth Fund Goldman Sachs Strategic Growth Fund. Institutional Shares, Goldman Sachs Strategic Growth Fund Goldman Sachs Strategic Growth Fund - Institutional Shares. Russell 1000 Growth Index Russell 1000 Growth Index. Acquired Fund Fees and Expenses Acquired Fund Fees and Expenses Fee Waiver or Reimbursement over Assets, Date of Termination Goldman Sachs Structured U.S. Equity Fund Goldman Sachs Structured U.S. Equity Fund. Summary - Institutional Shares - Goldman Sachs Structured U.S. Equity Fund Prospectus Six. Institutional Shares, Goldman Sachs Structured U.S. Equity Fund Institutional Shares, Goldman Sachs Structured U.S. Equity Fund. Summary - Service Shares - Goldman Sachs Strategic International Equity Fund Prospectus Seven. Service Shares, Goldman Sachs Strategic International Equity Fund Service Shares, Goldman Sachs Strategic International Equity Fund. Goldman Sachs Strategic International Equity Fund Goldman Sachs Strategic International Equity Fund. Goldman Sachs Government Income Fund Goldman Sachs Government Income Fund. Summary - Service Shares - Goldman Sachs Government Income Fund Prospectus Eight. Service Shares, Goldman Sachs Government Income Fund Service Shares, Goldman Sachs Government Income Fund. Barclays Capital Government/Mortgage Index Barclays Capital Government/Mortgage Index. Goldman Sachs Growth Opportunities Fund Goldman Sachs Growth Opportunities Fund. Summary - Service Shares - Goldman Sachs Growth Opportunities Fund Prospectus Nine. Service Shares, Goldman Sachs Growth Opportunities Fund Service Shares, Goldman Sachs Growth Opportunities Fund. Russell Midcap Growth Index Russell Midcap Growth Index. Summary - Service Shares - Goldman Sachs Structured U.S. Equity Fund Prospectus Ten. Service Shares, Goldman Sachs Structured U.S. Equity Fund Service Shares, Goldman Sachs Structured U.S. Equity Fund. Service Shares, Goldman Sachs Large Cap Value Fund Goldman Sachs Large Cap Value Fund - Service Shares. Summary - Service Shares - Goldman Sachs Large Cap Value Fund Prospectus Eleven. Inception Period Since Jan 12, 1998 Since Inception. Summary - Service Shares - Goldman Sachs Mid Cap Value Fund Prospectus Twelve. Service Shares, Goldman Sachs Mid Cap Value Fund Goldman Sachs Mid Cap Value Fund - Service Shares. Since Inception Period Feb 13, 1998 Since Inception. Inception Period Since May 01, 1998 Since Inception. Summary - Service Shares - Goldman Sachs Structured Small Cap Equity Fund Prospectus Thirteen. Service Shares, Goldman Sachs Structured Small Cap Equity Fund Goldman Sachs Structured Small Cap Equity Fund - Service Shares. Goldman Sachs Core Fixed Income Fund Goldman Sachs Core Fixed Income Fund. Summary - Service Shares - Goldman Sachs Core Fixed Income Fund Prospectus Fourteen. Service Shares, Goldman Sachs Core Fixed Income Fund Goldman Sachs Core Fixed Income Fund - Service Shares. Barclays Capital U.S. Aggregate Bond Index Barclays Capital U.S. Aggregate Bond Index. Inception Period Since Aug 31, 2007 Since Inception. Summary - Service Shares - Goldman Sachs Strategic Growth Fund Prospectus Fifteen. Service Shares, Goldman Sachs Strategic Growth Fund Goldman Sachs Strategic Growth Fund - Service Shares. Inception Period Since Apr 30, 1998 Since Inception. Inception Period Since Jan 09, 2006 Since Inception. Goldman Sachs Money Market Fund Goldman Sachs Money Market Fund. Summary - Service Shares - Goldman Sachs Money Market Fund Prospectus Sixteen. Service Shares, Goldman Sachs Money Market Fund Goldman Sachs Money Market Fund - Service Shares. S&P 500 Index S&P 500 Index. Goldman Sachs Equity Index Fund Goldman Sachs Equity Index Fund. Summary - Service Shares - Goldman Sachs Equity Index Fund Prospectus Seventeen. Service Shares, Goldman Sachs Equity Index Fund Goldman Sachs Equity Index Fund - Service Shares. Inception Period Since Jul 24, 2007 Since Inception Period Eight. Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Risk Money Market Fund [Text] Expenses Restated to Reflect Current [Text]