| Government Income Trust (IS and SS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| U.S. Government Securities Fund: 2-5 Years (R, IS, and SS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Adjustable Rate Securities Fund (IS and SS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Adjustable Rate Securities Fund (IS and SS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Adjustable Rate Securities Fund (IS and SS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Bond Fund (A, B, C, F, IS, and R6 Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Bond Fund (A, B, C, F, IS, and R6 Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Bond Fund (A, B, C, F, IS, and R6 Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| California Municipal Cash Trust (CAP Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| California Municipal Cash Trust (CII Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| California Municipal Cash Trust (CS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| California Municipal Cash Trust (SS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| California Municipal Cash Trust (WS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| California Municipal Cash Trust (WS, SS, CII, CS, and CAP Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| California Municipal Cash Trust (WS, SS, CII, CS, and CAP Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Capital Income Fund (A, B, C, F, R, and IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Capital Income Fund (A, B, C, F, R, and IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Capital Income Fund (A, B, C, F, R, and IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Capital Reserves Fund - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Capital Reserves Fund - Semi-Annual Shareholder Report March 30 2020 | The fund's semi-annual report provides shareholders with information such as recent performance, portfolio information and financial information. | March 30 2020 | |
| Capital Reserves Fund - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Capital Reserves Fund - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Clover Small Value Fund (A, C, R, IS, and R6 Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Clover Small Value Fund (A, C, R, IS, and R6 Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Clover Small Value Fund (A, C, R, IS, and R6 Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Emerging Market Debt Fund (A, C, and IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Emerging Market Debt Fund (A, C, and IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Emerging Market Debt Fund (A, C, and IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Emerging Markets Equity Fund (IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Emerging Markets Equity Fund (IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Emerging Markets Equity Fund (IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Equity Advantage Fund (A and IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Equity Advantage Fund (A and IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Equity Advantage Fund (A and IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Equity Income Fund, Inc. (A, B, C, F, R, and IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Equity Income Fund, Inc. (A, B, C, F, R, and IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Equity Income Fund, Inc. (A, B, C, F, R, and IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Floating Rate Strategic Income Fund (A, C, IS, and R6 Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Floating Rate Strategic Income Fund (A, C, IS, and R6 Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Floating Rate Strategic Income Fund (A, C, IS, and R6 Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Fund for U.S. Government Securities (A, B, and C Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Fund for U.S. Government Securities (A, B, and C Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Fund for U.S. Government Securities (A, B, and C Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Georgia Municipal Cash Trust - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Georgia Municipal Cash Trust - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Georgia Municipal Cash Trust - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Global Allocation Fund (A, B, C, R, IS, and R6 Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Global Allocation Fund (A, B, C, R, IS, and R6 Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Global Allocation Fund (A, B, C, R, IS, and R6 Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Global Strategic Value Dividend Fund (A, C, IS, and R6 Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Global Strategic Value Dividend Fund (A, C, IS, and R6 Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Global Strategic Value Dividend Fund (A, C, IS, and R6 Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Global Total Return Bond Fund (A, C, and IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Global Total Return Bond Fund (A, C, and IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Global Total Return Bond Fund (A, C, and IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Income Securities, Inc. (A, C, and F Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Income Securities, Inc. (A, C, and F Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Government Income Securities, Inc. (A, C, and F Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Income Trust (IS and SS Shares) - Annual Shareholder Report March 30 2020 | The fund's annual report provides shareholders with information such as recent performance, portfolio information and financial information. | March 30 2020 | |
| Government Income Trust (IS and SS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Income Trust (IS and SS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (ADM Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (AVR Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (CAP Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (CII Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (CS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (PRM Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (SEL Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (SEL, IS, SS, ADM, CII, CS, CAP, SEL, PRM, and AVR Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Government Obligations Fund (SEL, IS, SS, ADM, CII, CS, CAP, TR, PRM, and AVR Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (SEL, IS, SS, ADM, CII, CS, CAP, TR, PRM, and AVR Shares) - Semi-Annual Shareholders Report March 30 2020 | The fund's semi-annual report provides shareholders with information such as recent performance, portfolio information and financial information. | March 30 2020 | |
| Government Obligations Fund (SS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Fund (TR Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Tax-Managed Fund (AS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Tax-Managed Fund (AS, IS, and SS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Tax-Managed Fund (AS, IS, and SS Shares) - Semi-Annual Shareholder Report March 30 2020 | The fund's semi-annual report provides shareholders with information such as recent performance, portfolio information and financial information. | March 30 2020 | |
| Government Obligations Tax-Managed Fund (AS, IS, and SS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Government Obligations Tax-Managed Fund (IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Obligations Tax-Managed Fund (SS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Reserves Fund (A, B, C, F, and P Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Reserves Fund (A, B, C, F, and P Shares) - Semi-Annual Shareholder Report March 30 2020 | The fund's semi-annual report provides shareholders with information such as recent performance, portfolio information and financial information. | March 30 2020 | |
| Government Reserves Fund (A, B, C, F, and P Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Government Reserves Fund (A, B, C, and F Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Reserves Fund (P Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Ultrashort Duration Fund (A, IS, SS, and R6 Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Government Ultrashort Duration Fund (A, IS, SS, and R6 Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Government Ultrashort Duration Fund (A, IS, SS, and R6 Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes Global Equity Fund (IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes Global Equity Fund (IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Hermes Global Equity Fund (IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes Global Small Cap Fund (IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes Global Small Cap Fund (IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Hermes Global Small Cap Fund (IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes International Equity Fund (IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes International Equity Fund (IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Hermes International Equity Fund (IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes SDG Engagement Equity Fund (A and IS Shares) - Prospectus March 30 2020 | The fund's Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |
| Hermes SDG Engagement Equity Fund (A and IS Shares) - Statement of Additional Information (SAI) March 30 2020 | The Statement of Additional Information offers detailed information about the fund's policies, operations, management, investments and risks. | March 30 2020 | |
| Hermes SDG Engagement Equity Fund (A and IS Shares) - Summary Prospectus March 30 2020 | The fund's Summary Prospectus contains information including the fund's investment objective and strategies, principal investments, risks of investing in the fund, and sales charges, management fees and other expenses. | March 30 2020 | |